... Convert tires from mm to inches
How to correctly calculate the inch size of the wheels in millimeters. How to convert tire size from inches to metric
Tire calculator inches
American and european manufacturers differ in their markings. European tires are metric. Therefore, when changing tires, there may be a problem with the translation of tire parameters. In most cases, this is a conversion from inches to centimeters. Enter the size in inches and click calculate. You will see the tire size in meters (dimensions will be rounded up to European parameters).
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Conversion of Metric Tire Size to Inch (US)
Thanks to the tire calculator, you can do the reverse calculation - convert values \u200b\u200bin "cm" and "mm" to inches. To do this, enter the standard size, diameter, width and height of the tire profile and press the "calculate" button. The calculator will convert the values \u200b\u200bto inches.
www.bodry-wheels.spb.ru
How to convert wheel size in inches to centimeters, size table
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American-made tire markings are very different from European designations. Therefore, drivers constantly have to convert inches to millimeters or centimeters. Only after carrying out such calculations, you can choose the right wheel for your car.
29 inch
The Russian SUV comes with wheels that are slightly smaller in diameter than a conventional SUV. The standard size of foreign machines is 29 inches or 235 / 75R15.
The domestic off-road vehicle (Niva) is equipped at the factory with 175 / 80R15 wheels. On such tires, the car quickly buries itself in the mud, with difficulty moving along our off-road.
To remedy this situation, it is necessary to install a 29 inch rubber. It will increase the ground clearance by 25 mm. Fitting 31-inch tires will increase the ground clearance by 50 mm. To install such wheels, you only need to change wheel arches... You will need to increase their dimensions.
Inch system
Most SUVs use tires labeled 31x10.5R15.
31 here stands for the inch diameter of the wheel. One inch, as you know, corresponds to two and a half centimeters, and to be precise, 2.54 cm.In other words, after translation, D will be equal to 78.7 cm.
Such marking is quite in demand, since it is convenient, since it shows the size of the wheel with the parameters of the disc already taken into account.
The diameter of a wheel 31x10.5R15 is practically equal in dimensions to a tire with the designation 31x10.5R16. The only difference will be the reduction of the tire profile by 2.5 cm.
10.5 is the width of the rubber in inches. But this value is not entirely accurate, since when converted from inches to traditional centimeters, it will turn out to be 26.5 cm.However, when measuring this value with an ordinary ruler, the value will fluctuate within 23 cm.Only if the tire has a width index of 12.5, it will be possible talk about a width of 26.5 cm.
You should always remember this nuance if you decide to install the maximum tire size in the arch of an SUV.
Metric system
This measurement system is much more difficult to use. Take rubber labeled 265-75-15.
265 mm - tire width. As in the inch system, its actual width will be approximately 230-235 mm.
75 - profile height in millimeters. To get the true value, you need to take 75% of 265 mm. It will be 198.75 mm. Then this number is multiplied by two. This is because the total wheel diameter is equal to D of the disc plus twice the profile height. In our case, it equals 15 inches. As a result, after the calculations, we get the D disk of 381 mm. Total D wheels: 397.5 + 381 \u003d 778 mm or 77.8 centimeters.
R15 - radial rubber. Rim diameter is in inches. Always surprising. Why is the inch designation left in the metric system?
If you look closely at these two systems, you will notice a slight difference, approximately 1.1 centimeters. It has no effect on the design and installation of the wheels.
Today on the Internet for the correct calculation of tire size, a large number of various calculators are offered. All of them work completely free of charge and make it much easier to find the right tire size.
We have compiled a table of the most common sizes, perhaps it will help you quickly find suitable size wheels.
| Designations | Inches |
| 235 / 65R16 | 28,0 |
| 235 / 75R15 | 28,9 |
| 225 / 75R16 | 29,3 |
| 245 / 70R16 | 29,5 |
| 285 / 60R16 | 29,5 |
| 225 / 85R15 | 30,1 |
| 245 / 75R16 | 30,5 |
| 265 / 65R17 | 30,6 |
| 265 / 70R16 | 30,6 |
| 305 / 60R17 | 31,4 |
| 265 / 70R17 | 31,6 |
| 265 / 75R16 | 31,6 |
| 235 / 85R16 | 31,7 |
| 285 / 70R16 | 31,7 |
| 285 / 70R17 | 32,7 |
| 285 / 75R16 | 32,8 |
| 305 / 70R16 | 32,8 |
| 255 / 85R16 | 33,1 |
| 305 / 75R16 | 34,0 |
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How to translate the designation of a motorcycle tire from inches to millimeters
I'll tell you how to calculate your tire in millimeters if the size is in inches. An interesting fact is that the diameter of moto tires (unlike bicycle ones) is still calculated in inches, but the width and height of the pile itself is now h
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How to translate the designation of a motorcycle tire from inches to millimeters
I'll tell you how to calculate your tire in millimeters if the size is indicated in inches. An interesting fact is that the diameter of moto tires (unlike bicycle ones) is still calculated in inches, but the width and height of the pile itself is now more often found with the designation in the metric coordinate system and is indicated it is in millimeters.
4.6 X 25.4 \u003d 116.84
the figure is approximate because we counted the inch with only one decimal place, but this is not so important because we can choose the tire itself in a certain range. That is, tires with a width of 110 and 120 mm are suitable for us, depending on the conditions of use of our motorcycle, soil, mud, asphalt, mixed type. We have not finished counting our tire yet, because the metric coordinate system also indicates the height of the tire itself as a percentage of the width, for example, tires can have such values \u200b\u200bas 110/90 or 120/80 or 120/90. This says that for example a 110/90 tire will be 110mm wide and 110 X 90% \u003d 99mm high, and a 120/80 tire will be 120mm wide and 120 X 80% \u003d 96mm high. Let's also show how much the tire diameter in millimeters will take 18 inches. our tire is also multiplied by 25.4 and as a result we get approximately 457mm which is the diameter of our wheel without the tire.
Tire size Index Size Acceptable tires in inches of load capacity rim Alphanumeric Metric reinforced 100 90 802.75-16 40 46 1.50-1.85 MH 90-16 80 / 100-16 80 / 90-16 90 / 80-163.00-16 40 48 1.60-2.15 MH 90-16 90 / 100-16 90 / 90-16 100 / 80-163.25-16 48 55 1.85-2.50 MJ 90-16 100 / 100-16 100 / 90-16 110 / 80-163.50-16 52 58 1.85-2.50 ML 90 -16 100 / 100-16 100 / 90-16 110 / 80-164.60-16 58 59 1.85-3.00 MM 90-16 100 / 100-16 110 / 90-16 120 / 80-16 2.75-17 41 47 1.50- 1.85 MH 90-17 80 / 100-17 80 / 90-17 90 / 80-173.00-17 41 50 1.60-2.15 MH 90-17 90 / 100-17 90 / 90-17 100 / 80-174.50-17 50 67 2.15-3.00 MR 90-17 110 / 100-17 110 / 90-17 120 / 80-174.60-17 50 62 1.85-3.00 MS 90-17 100 / 100-17 130 / 90-17 140 / 80-175.10-17 50 67 2.50-3.50 MT 90-17 110 / 100-17 130 / 90-17 140 / 80-17 2.75-18 42 48 1.50-1.85 MH 90-18 80 / 100-18 80 / 90-18 90 / 80- 183.00-18 47 52 1.60-2.15 MH 90-18 90 / 100-18 90 / 90-18 100 / 80-183.25-18 52 59 1.85-2.50 MJ 90 -18 100 / 100-18 90 / 90-18 110 / 80-183.50-18 56 62 1.85-2.50 ML 90-18 100 / 100-18 100 / 90-18 110 / 80-183.60-18 51 62 1.85-2.50 MH 90-18 100/1 00-18 100 / 90-18 100 / 80-184.00-18 64 69 2.15-3.00 MN 90-18 110 / 100-18 100 / 90-18 110 / 80-184.10-18 60 69 1.85-3.00 ML 90-18 100 / 100-18 110 / 90-18 120 / 80-184.25-18 64 69 1.85-3.00 MM 90-18 110 / 100-18 120 / 90-18 130 / 80-184.85-18 66 69 2.15-3.00 ML 90 -18 110 / 100-18 120 / 90-18 130 / 80-184.60-18 63 69 1.85-3.00 MR 90-18 110 / 100-18 120 / 90-18 130 / 80-18 3.00-19 49 54 1.60- 2.15 MH 90-19 90 / 100-19 90 / 90-19 100 / 80-193.25-19 54 54 1.85-2.50 MJ 90-19 100 / 100-19 90 / 90-19 110 / 80-193.50-19 54 57 1.85-2.50 ML 90-19 100 / 100-19 100 / 90-19 100 / 80-193.60-19 52 54 1.85-2.50 MH 90-19 100 / 100-19 100 / 90-19 110 / 80-19 2.75- 21 45 54 1.50-1.85 MH 90-21 80 / 100-21 80 / 90-21 90 / 80-213.00-21 51 57 1.60-2.15 MH 90-21 90 / 100-21 90 / 90-21 100 / 80- 21
The pressure indicated on the side of the tire is the maximum allowable for this tire, but this does not mean that it is exactly what is recommended for your vehicle.
If you drive aggressively and make sufficiently sharp turns or your weight with luggage or a partner is close to the maximum recommended by the manufacturer of your equipment, the tires should be inflated to the maximum value indicated on your tire.
Tire pressures should only be checked when the motorcycle is cold or before driving off or after stopping when the tires have cooled down and have reached the ambient temperature.
The information on this website is intended for review, without being a public offer, determined by the provisions of Article 437 (2) of the Civil Code of the Russian Federation. To get accurate and timely information about the cost of goods and services, as well as their availability, you can contact our company "Yuka sport".
ukasport.ru
Tire Calculator - InchesTo convert US tire sizes in inches to European tire sizes in mm, you can use the Inch Tire Calculator.For example, you need to recalculate the American tire size with the marking 31X10.5 R15 - into the European one. We enter 31 x 10.5 x 15 and get the result of the calculation: 267/76 R15, and a little below you will be shown the standard size 265/75 rounded up to the European standard R15. |
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Tire Expert - Matching Inch and Metric Tire Sizes
This article, to a greater extent, of course, refers specifically to truck and special tires. Many of these tires have 2 size designations. Domestic tires were marked back in the days of the USSR and the sizes were, of course, metric. With the onset of an era of active foreign economic relations, trade with other countries, import-export, we began to receive tires with inch markings, and domestic manufacturers they also began to mark their goods in inch sizes.
Until now, there is no single size designation system, some manufacturers write the size in inches (for example 8.25R20), some in the metric system (for example 240-508), and some use both designations.
We have collected all the matches for you in the table below:
We remind you that the dimensions can be either the "-" sign (bias tire) or the letter "R" (radial tire)
| Metric size | = | Inch size |
| 220-508 | = | 7,50-20 |
| 240-508 | = | 8,25-20 |
| 260-508 | = | 9,00-20 |
| 280-508 | = | 10,00-20 |
| 300-508 | = | 11,00-20 |
| 320-508 | = | 12,00-20 |
| 320-457 | = | 12,00-18 |
| 320-406 | = | 12,00-16 |
| 370-508 | = | 14,00-20 |
| 365/85-20 | = | 14.00-20 |
| 385/65-22.5 | = | 15-22.5 |
| 425/65-22.5 | = | 16-22.5 |
| 445/65-22.5 | = | 18-22.5 |
| 280/80-18 | = | 10.5/80-18 |
| 335/80-18 | = | 12.5/80-18 |
| 335/80-20 | = | 12.5-20 |
| 375/75-20 | = | 16.0/70-20 |
| 405/70-20 | = | 16.0/70-20 |
| 440/80-24 | = | 16.9-24 |
| 460/70-24 | = | 17.5L24 |
| 500/70-24 | = | 19.5L24 |
| 480/80-26 | = | 18.4-26 |
| 440/80-28 | = | 16.9-28 |
| 385/95-24 | = | 14.00-24 |
| 385/95-25 | = | 14.00-25 |
| 445/95-24 | = | 16.00-24 |
| 445/95-25 | = | 16.00-25 |
| 505/95-25 | = | 18.00-25 |
| 445/80-25 | = | 17.5-25 |
| 525/80-25 | = | 20.5-25 |
| 550/65-25 | = | 20.5-25 |
| 650/65-25 | = | 23.5-25 |
| 750/65-25 | = | 26.5-25 |
| 875/65-25 | = | 29.5-25 |
| 1100/400-533 | = | 400/70-21 |
| 1200/500-508 | = | 500/70-20 |
| 1300/530-533 | = | 530/40-21 |
tyre-expert.ru
Converting sizes from mm to inches (decimal and fractional)
In engineering and, in particular, in cycling, in the countries of Europe and the former USSR, the metric system is used. But many dimensions, such as pipe diameters or tire sizes, are also indicated in inches.
From time to time, it becomes necessary to transfer from one measurement system to another, for example, when deciding on the compatibility of the rubber sizes of bicycle wheels.
How to convert inch sizes to metric is described here, but we will describe the reverse process in this article.
In principle, from the point of view of mathematics, this question is solved quite simply:
Conversion formula from millimeters (mm) to inches (in):
in \u003d mm * 0.03937 or
Two options are given simply because it is convenient for some to divide, and for others to multiply
Thus: 50mm is 1.77 "
Conversion formula from inches (in) to millimeters (mm):
mm \u003d in / 0.03937 or
those. 3 "is 76.2mm
But given the fact that our person is not always comfortable or too lazy to count, we decided to give here a ready-made table with a translation from 1 to 100 mm in inches. And not only in decimal, but also in fractional form.
Conversion table from millimeters (mm) to inches (in)
| Millimeters | Decimal inches | Fractional inches | Millimeters | Decimal inches | Fractional inches | |
| 1 | 0,04 | 3⁄64 | 51 | 2,01 | 2 1⁄64 | |
| 2 | 0,08 | 5⁄64 | 52 | 2,05 | 2 3⁄64 | |
| 3 | 0,12 | 1⁄8 | 53 | 2,09 | 2 3⁄32 | |
| 4 | 0,16 | 5⁄32 | 54 | 2,13 | 2 1⁄8 | |
| 5 | 0,20 | 13⁄64 | 55 | 2,17 | 2 11⁄64 | |
| 6 | 0,24 | 15⁄64 | 56 | 2,20 | 2 13⁄64 | |
| 7 | 0,28 | 9⁄32 | 57 | 2,24 | 2 1⁄4 | |
| 8 | 0,31 | 5⁄16 | 58 | 2,28 | 2 9⁄32 | |
| 9 | 0,35 | 23⁄64 | 59 | 2,32 | 2 21⁄64 | |
| 10 | 0,39 | 25⁄64 | 60 | 2,36 | 2 23⁄64 | |
| 11 | 0,43 | 7⁄16 | 61 | 2,40 | 2 13⁄32 | |
| 12 | 0,47 | 15⁄32 | 62 | 2,44 | 2 7⁄16 | |
| 13 | 0,51 | 33⁄64 | 63 | 2,48 | 2 31⁄64 | |
| 14 | 0,55 | 35⁄64 | 64 | 2,52 | 2 33⁄64 | |
| 15 | 0,59 | 19⁄32 | 65 | 2,56 | 2 9⁄16 | |
| 16 | 0,63 | 5⁄8 | 66 | 2,60 | 2 19⁄32 | |
| 17 | 0,67 | 43⁄64 | 67 | 2,64 | 2 41⁄64 | |
| 18 | 0,71 | 45⁄64 | 68 | 2,68 | 2 43⁄64 | |
| 19 | 0,75 | 3⁄4 | 69 | 2,72 | 2 23⁄32 | |
| 20 | 0,79 | 25⁄32 | 70 | 2,76 | 2 3⁄4 | |
| 21 | 0,83 | 53⁄64 | 71 | 2,80 | 2 51⁄64 | |
| 22 | 0,87 | 55⁄64 | 72 | 2,83 | 2 53⁄64 | |
| 23 | 0,91 | 29⁄32 | 73 | 2,87 | 2 7⁄8 | |
| 24 | 0,94 | 15⁄16 | 74 | 2,91 | 2 29⁄32 | |
| 25 | 0,98 | 63⁄64 | 75 | 2,95 | 2 61⁄64 | |
| 26 | 1,02 | 1 1⁄32 | 76 | 2,99 | 2 63⁄64 | |
| 27 | 1,06 | 1 1⁄16 | 77 | 3,03 | 3 1⁄32 | |
| 28 | 1,10 | 1 7⁄64 | 78 | 3,07 | 3 5⁄64 | |
| 29 | 1,14 | 1 9⁄64 | 79 | 3,11 | 3 7⁄64 | |
| 30 | 1,18 | 1 3⁄16 | 80 | 3,15 | 3 5⁄32 | |
| 31 | 1,22 | 1 7⁄32 | 81 | 3,19 | 3 3⁄16 | |
| 32 | 1,26 | 1 17⁄64 | 82 | 3,23 | 3 15⁄64 | |
| 33 | 1,30 | 1 19⁄64 | 83 | 3,27 | 3 17⁄64 | |
| 34 | 1,34 | 1 11⁄32 | 84 | 3,31 | 3 5⁄16 | |
| 35 | 1,38 | 1 3⁄8 | 85 | 3,35 | 3 11⁄32 | |
| 36 | 1,42 | 1 27⁄64 | 86 | 3,39 | 3 25⁄64 | |
| 37 | 1,46 | 1 29⁄64 | 87 | 3,43 | 3 27⁄64 | |
| 38 | 1,50 | 1 1⁄2 | 88 | 3,46 | 3 15⁄32 | |
| 39 | 1,54 | 1 17⁄32 | 89 | 3,50 | 3 1⁄2 | |
| 40 | 1,57 | 1 37⁄64 | 90 | 3,54 | 3 35⁄64 | |
| 41 | 1,61 | 1 39⁄64 | 91 | 3,58 | 3 37⁄64 | |
| 42 | 1,65 | 1 21⁄32 | 92 | 3,62 | 3 5⁄8 | |
| 43 | 1,69 | 1 11⁄16 | 93 | 3,66 | 3 21⁄32 | |
| 44 | 1,73 | 1 47⁄64 | 94 | 3,70 | 3 45⁄64 | |
| 45 | 1,77 | 1 49⁄64 | 95 | 3,74 | 3 47⁄64 | |
| 46 | 1,81 | 1 13⁄16 | 96 | 3,78 | 3 25⁄32 | |
| 47 | 1,85 | 1 27⁄32 | 97 | 3,82 | 3 13⁄16 | |
| 48 | 1,89 | 1 57⁄64 | 98 | 3,86 | 3 55⁄64 | |
| 49 | 1,93 | 1 59⁄64 | 99 | 3,90 | 3 57⁄64 | |
| 50 | 1,97 | 1 31⁄32 | 100 | 3,94 | 3 15⁄16 |
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How to translate the designation of a motorcycle tire from inches to millimeters Yukasport
I will tell you how to calculate your tire in millimeters if the size is indicated in inches. An interesting fact is that the diameter of motorcycle tires (unlike bicycle tires) is still calculated in inches, but the width and height of the pile itself are now more often found with the designation in the metric coordinate system and is indicated it is in millimeters.
I will give everything very simply by example, for example, if 4.6Н18 (or just 4.6) is indicated, then the tire in millimeters will be:
4.6 X 25.4 \u003d 116.84
the figure is approximate because we counted the inch with only one decimal place, but this is not so important because we can choose the tire itself in a certain range. That is, tires with a width of 110 and 120 mm are suitable for us, depending on the conditions of use of our motorcycle, soil, mud, asphalt, offset type. We have not finished counting our tire yet, because the metric coordinate system also indicates the height of the tire itself as a percentage of the width, for example, tires can have such values \u200b\u200bas 110/90 or 120/80 or 120/90. This says that for example a 110/90 tire will be 110mm wide and 110 X 90% \u003d 99mm high, and a 120/80 tire will be 120mm wide and 120 X 80% \u003d 96mm high. Let's also show how much the tire diameter in millimeters will take 18 inches. our tire is also multiplied by 25.4 and as a result we get approximately 457mm which is the diameter of our wheel without the tire.
Well, now an approximate table for converting the designation of tires from inches to the metric system.
For road bikes For motorcycles enduro
Letter designation limit permissible speed for tire
Max type. Speed \u200b\u200bkm / h J 100K 110L 120M 130N 140P 150Q 160R 170S 180T 190U 200H 210V 240W 270Y 300Z 300+
For 2.00, 2.5 and 2.75 inch tires maximum speed 120km / h
Some motorcycle models may recommend different front and rear tire pressures.
The pressure indicated on the side of the tire is the maximum allowable for this tire, but this does not mean that it is exactly what is recommended for your vehicle.
If you drive aggressively and make sufficiently sharp turns or your weight with luggage or a partner is close to the maximum recommended by the manufacturer of your equipment, the tires should be inflated to the maximum value indicated on your tire.
Driving with insufficiently inflated tires is dangerous. Your tires can become very hot and traction can be lost.
Tire pressures should only be checked when the motorcycle is cold or before driving off or after stopping when the tires have cooled down and have reached the ambient temperature.
old.ukasport.ru
Conversion of tire sizes
Converting American sizes to European
The size of tires according to American standards using the example of Cooper tires popular in Russia is indicated in inches (one inch is equal to \u003d 25.4 mm). The size consists of three dimensions: the outer diameter of the tire, the landing diameter and the diameter of the tire. Radial models have the letter R in front of the bore diameter, as in Europe.
To do this, you need to determine the height of the profile - divide the difference between the outer and landing diameters by two, and the resulting value by the width of the profile. Example: for a 30-9.5 R15 tire, the profile height will be (30-15): 2 \u003d 7.5: 9.5 \u003d 0.78. The result is rounded to 75 percent. Now the width of the profile: in millimeters it will be 9.5x25.4 \u003d 241.3. Rounding up again and taking these roundings into account, the "European" designation for a 30-9.5 R15 tire will look like 240/75 R15.
When the tire profile height is not indicated, it must be remembered that for passenger tires it is 80-82 percent, while for trucks it is about 88 percent.
Conversion of American sizes to Russian
Everything is simple here. In order to express an American tire in sizes that we understand, you need to know the width of the profile in inches, for example 12, and the diameter of the rim, let it be 20 inches. Next, you need to turn each of these values \u200b\u200binto millimeters, multiplying by 25.4 each. Total: 12 * 25.4 \u003d 304.8 (always round up) and 20 * 25.4 \u003d 508 convert obscure size designation to some truck tires 12.00-20 to our native 320x508. That's the whole trick.
To find the size you need in the "Fork" store, use the search form on the main page. Enter the required parameters and click on the "Find" button - and you will immediately see all available car tires.
There are situations when the markings on the wheels of a bicycle cannot be read, and a worn tire or tube needs to be replaced. In this case, there is only one way to find out the exact data for buying a replacement - to measure the diameter of the wheel. But how to find out the diameter of a wheel using the available tools? There are several ways to take measurements, but in order to avoid errors, pay attention to some rules.
When measuring, you should adhere to the following tips:
- fix the wheel so that its rotation does not interfere with measurements;
- the obtained measurement result is rounded to the nearest whole number;
- the marking is most often located on the side surface.
In order to find out the diameter of a wheel, you will need:
- tape measure or soft meter;
- calculator;
- the object of measurement (the bicycle itself or its wheel).
Methods for measuring wheel diameter
Standard method
Initially, it is necessary to place the bike vertically in such a way as to exclude its accidental fall, it is best to fix the bike in an upright position.
Then use a tape measure to determine the distance from the center of the wheel axis to the floor. Divide this value by 2.54 to get the wheel radius in inches. The diameter is equal to two radii, which means that the resulting figure will need to be multiplied by two, and do not forget about rounding. To understand the diameter of a wheel 40 cm, how many will be in inches, you need to divide 40 by 2.54 and you get the required value of 16 inches.
By modern standards, bicycle tires are labeled in next order: The first number indicates the wheel diameter, followed by the wheel width. The markings, expressed in numbers 26x1.75, indicate that the tires for this bike have a diameter of 66.04 cm and a tire width of 4.445 cm.
The accepted unit of measurement in the ISO system is millimeters, respectively, if you measured in centimeters, you just need to multiply your result by ten.
The measurement process takes place exactly as in the first case, but the radius is measured from the center of the axis to the outer edge of the rim, the diameter is found by multiplying by two.
To measure the width of the wheel, the same steps are carried out as in the first method, and it should be borne in mind that if the width of the original tire is only slightly different from the one you are going to purchase, then you will not have any problems when replacing it.
For marking bicycle wheels in the ISO system, it is not customary to put the width of the wheel, and then its diameter, respectively, marking 53.3 x700 indicates that we have a tire with a width of 53.3 mm and a diameter of 700 mm.
What are the sizes of bicycle wheels?
Wheel sizes depend on bike models, their intended use and the age of the owner. So, for children's and teenage bicycles, sizes up to 20 and 24 inches with a wheel size in millimeters 508-609 are typical. Special bicycles, the so-called mountain bikes, have a wheel size of 26 inches and 660 mm. General purpose bicycles are road bicycles, often equipped with wheels of 28 inches and 711 mm. We should also highlight the category of mountain bikes, with a large size, they have 29 wheels. What is the size in millimeters? That's right, 736 mm.
To calculate how much a 16-inch wheel will be in centimeters, you need to multiply this value by 2.54 and you get 40.64 cm, and a 10-inch wheel, how many cm? - 10x2.54 \u003d 25.4 cm!
Below are the wheel sizes for children's bicycles.
The dimensions of the wheels of bicycles for children are most often the following dimensions:
- wheel diameter 12 inches in cm will be equal to 30.48, age 3 years;
- a wheel diameter of 14 inches in cm will be 35.56, age 3-5 years;
- a wheel diameter of 15 inches in cm will be equal to 38.1, age 4-5 years;
- wheel diameter 16 inches in cm will be equal to 40.64, age 4-6 years;
- wheel diameter 18 inches in cm will be equal to 45.72, age 5-6 years;
- wheel diameter 20 inches in cm will be 50.8, age 6-8 years;
- a wheel diameter of 24 inches in cm would be 60.96, over 8 years old.
As mentioned above, in the classic version, the marking is applied to the side surface of the tire in the following sequence:
- Diameter in inches.
- Width in inches.
The standard marking looks like 20 / 1.75.
In the case of ISO marking, the sequence looks different:
- Profile height in millimeters.
- Rim diameter in millimeters.
The same wheel will look like 44.4 / 406.
For the successful operation of the bike, you should use only tires and tubes recommended by the manufacturer. The fact is that tires that are overly narrowed from the normal size are prone to more frequent punctures, and too high a profile will provide noticeable resistance when driving and be damaged more often. Only use the correct tire sizes and enjoy pleasant cycling.
You may need such a calculator if you want to install instead of standard tires or their analogues, but already of a different standard size. It allows you to visually represent dimensional changes and only then interpret them for a specific vehicle. At the same time, the calculator is not a tool for selecting tires and wheels, since it does not contain a database of manufacturers.
When replacing disks and tires, taking into account the geometric data obtained from tire calculator, it will not be superfluous to make several measurements yourself. First, the distance from the suspension to the wheel surface with insideas well as from the shock absorber cup to the tread surface. Secondly, from the wing, as well as the steering rods to the tread surface. In this case, the geometric parameters of the new wheel assembly should not greatly exceed the size standard tires and disks. Otherwise, unstable behavior of the vehicle may occur.
A few basic rules to remember when changing tires and wheels.
- Tread summer tires standard has a depth of 0.8-1 cm;
- When installing discs with a larger diameter than the standard ones, it is necessary to reduce the overhang value - for every inch of height 3 mm overhang;
- It is not uncommon for the hub holes on discs that are not original to have a larger diameter. Therefore, when installing them, you need to use special rings for fixing;
- In the event that the hole on the disc is smaller than the hub mounts, it is strictly forbidden to drill them out, as well as grind the hub itself;
- Correct selection non-original discs using a calculator will allow you to save the driving characteristics of the car;
- If you are not sure about the compatibility of tires or wheels with your car, it is better not to install, or contact specialists for help.
How to count correctly inch size wheels in millimeters. How to convert tire size from inches to metric
Tire calculator inches
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Conversion of Metric Tire Size to Inch (US)
www.bodry-wheels.spb.ru
How to convert wheel size in inches to centimeters, size table
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American-made tire markings are very different from European designations. Therefore, drivers constantly have to convert inches to millimeters or centimeters. Only after carrying out such calculations, you can choose the right wheel for your car.
29 inch
The Russian SUV comes with wheels that are slightly smaller in diameter than a conventional SUV. The standard size of foreign machines is 29 inches or 235 / 75R15.
The domestic off-road vehicle (Niva) is equipped at the factory with 175 / 80R15 wheels. On such tires, the car quickly buries itself in the mud, with difficulty moving along our off-road.
To remedy this situation, it is necessary to install a 29 inch rubber. It will increase the ground clearance by 25 mm. Fitting 31-inch tires will increase the ground clearance by 50 mm. To install such wheels, you only need to change the wheel arches. You will need to increase their dimensions.
Inch system
Most SUVs use tires labeled 31x10.5R15.
31 here stands for the inch diameter of the wheel. One inch, as you know, corresponds to two and a half centimeters, and to be precise, 2.54 cm.In other words, after translation, D will be equal to 78.7 cm.
Such marking is quite in demand, since it is convenient, since it shows the size of the wheel with the parameters of the disc already taken into account.
The diameter of a wheel 31x10.5R15 is practically equal in dimensions to a tire with the designation 31x10.5R16. The only difference will be the reduction of the tire profile by 2.5 cm.
10.5 is the width of the rubber in inches. But this value is not entirely accurate, since when converted from inches to traditional centimeters, it will turn out to be 26.5 cm.However, when measuring this value with an ordinary ruler, the value will fluctuate within 23 cm.Only if the tire has a width index of 12.5, it will be possible talk about a width of 26.5 cm.
You should always remember this nuance if you decide to install the maximum tire size in the arch of an SUV.
Metric system
This measurement system is much more difficult to use. Take rubber labeled 265-75-15.
265 mm - tire width. As in the inch system, its actual width will be approximately 230-235 mm.
75 - profile height in millimeters. To get the true value, you need to take 75% of 265 mm. It will be 198.75 mm. Then this number is multiplied by two. This is because the total wheel diameter is equal to D of the disc plus twice the profile height. In our case, it equals 15 inches. As a result, after the calculations, we get the D disk of 381 mm. Total D wheels: 397.5 + 381 \u003d 778 mm or 77.8 centimeters.
R15 - radial rubber. Rim diameter is in inches. Always surprising. Why is the inch designation left in the metric system?
If you look closely at these two systems, you will notice a slight difference, approximately 1.1 centimeters. It has no effect on the design and installation of the wheels.
Today on the Internet for the correct calculation of tire size, a large number of various calculators are offered. All of them work completely free of charge and make it much easier to find the right tire size.
We have compiled a table of the most common sizes, perhaps it will help you quickly find the right wheel size.
| Designations | Inches |
| 235 / 65R16 | 28,0 |
| 235 / 75R15 | 28,9 |
| 225 / 75R16 | 29,3 |
| 245 / 70R16 | 29,5 |
| 285 / 60R16 | 29,5 |
| 225 / 85R15 | 30,1 |
| 245 / 75R16 | 30,5 |
| 265 / 65R17 | 30,6 |
| 265 / 70R16 | 30,6 |
| 305 / 60R17 | 31,4 |
| 265 / 70R17 | 31,6 |
| 265 / 75R16 | 31,6 |
| 235 / 85R16 | 31,7 |
| 285 / 70R16 | 31,7 |
| 285 / 70R17 | 32,7 |
| 285 / 75R16 | 32,8 |
| 305 / 70R16 | 32,8 |
| 255 / 85R16 | 33,1 |
| 305 / 75R16 | 34,0 |
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How to translate the designation of a motorcycle tire from inches to millimeters
I'll tell you how to calculate your tire in millimeters if the size is indicated in inches. An interesting fact is that the diameter of moto tires (unlike bicycle ones) is still calculated in inches, but the width and height of the pile itself is now more often found with the designation in the metric coordinate system and is indicated it is in millimeters.
I will give everything very simply by example, for example, if 4.6Н18 (or just 4.6) is indicated, then the tire in millimeters will be:
4.6 X 25.4 \u003d 116.84
the figure is approximate because we counted the inch with only one decimal place, but this is not so important because we can choose the tire itself in a certain range. That is, tires with a width of 110 and 120 mm are suitable for us, depending on the conditions of use of our motorcycle, soil, mud, asphalt, mixed type. We have not finished counting our tire yet, because the metric coordinate system also indicates the height of the tire itself as a percentage of the width, for example, tires can have such values \u200b\u200bas 110/90 or 120/80 or 120/90. This says that for example a 110/90 tire will be 110mm wide and 110 X 90% \u003d 99mm high, and a 120/80 tire will be 120mm wide and 120 X 80% \u003d 96mm high. Let's also show how much the tire diameter in millimeters will take 18 inches. our tire is also multiplied by 25.4 and as a result we get approximately 457mm which is the diameter of our wheel without the tire.
Well, now an approximate table for converting the designation of tires from inches to the metric system.
Tire size Index Allowable Tire size in lifting capacity Rim Alphanumeric Metric reinforced 100 90 802.75-16 40 46 1.50-1.85 MH 90-16 80 / 100-16 80 / 90-16 90 / 80-163.00-16 40 48 1.60- 2.15 MH 90-16 90 / 100-16 90 / 90-16 100 / 80-163.25-16 48 55 1.85-2.50 MJ 90-16 100 / 100-16 100 / 90-16 110 / 80-163.50-16 52 58 1.85-2.50 ML 90-16 100 / 100-16 100 / 90-16 110 / 80-164.60-16 58 59 1.85-3.00 MM 90-16 100 / 100-16 110 / 90-16 120 / 80-16 2.75- 17 41 47 1.50-1.85 MH 90-17 80 / 100-17 80 / 90-17 90 / 80-173.00-17 41 50 1.60-2.15 MH 90-17 90 / 100-17 90 / 90-17 100 / 80- 174.50-17 50 67 2.15-3.00 MR 90-17 110 / 100-17 110 / 90-17 120 / 80-174.60-17 50 62 1.85-3.00 MS 90-17 100 / 100-17 130 / 90-17 140 / 80-175.10-17 50 67 2.50-3.50 MT 90-17 110 / 100-17 130 / 90-17 140 / 80-17 2.75-18 42 48 1.50-1.85 MH 90-18 80 / 100-18 80 / 90- 18 90 / 80-183.00-18 47 52 1.60-2.15 MH 90-18 90 / 100-18 90 / 90-18 100 / 80-183.25-18 52 59 1.85-2.50 MJ 90 -18 100 / 100-18 90 / 90-18 110 / 80-183.50-18 56 62 1.85-2.50 ML 90-18 100 / 100-18 100 / 90-18 110 / 80-183 .60-18 51 62 1.85-2.50 MH 90-18 100 / 100-18 100 / 90-18 100 / 80-184.00-18 64 69 2.15-3.00 MN 90-18 110 / 100-18 100 / 90-18 110 /80-184.10-18 60 69 1.85-3.00 ML 90-18 100 / 100-18 110 / 90-18 120 / 80-184.25-18 64 69 1.85-3.00 MM 90-18 110 / 100-18 120 / 90- 18 130 / 80-184.85-18 66 69 2.15-3.00 ML 90-18 110 / 100-18 120 / 90-18 130 / 80-184.60-18 63 69 1.85-3.00 MR 90-18 110 / 100-18 120 / 90-18 130 / 80-18 3.00-19 49 54 1.60-2.15 MH 90-19 90 / 100-19 90 / 90-19 100 / 80-193.25-19 54 54 1.85-2.50 MJ 90-19 100 / 100- 19 90 / 90-19 110 / 80-193.50-19 54 57 1.85-2.50 ML 90-19 100 / 100-19 100 / 90-19 100 / 80-193.60-19 52 54 1.85-2.50 MH 90-19 100 / 100-19 100 / 90-19 110 / 80-19 2.75-21 45 54 1.50-1.85 MH 90-21 80 / 100-21 80 / 90-21 90 / 80-213.00-21 51 57 1.60-2.15 MH 90- 21 90 / 100-21 90 / 90-21 100 / 80-21
The letter designation of the maximum permissible speed for the tire
Max type. Speed \u200b\u200bkm / h J 100K 110L 120M 130N 140P 150Q 160R 170S 180T 190U 200H 210V 240W 270Y 300Z 300+
For 2.00 2.5 and 2.75 inch tires, the maximum speed is 120 km / h
Some motorcycle models may recommend different front and rear tire pressures.
The pressure indicated on the side of the tire is the maximum allowable for this tire, but this does not mean that it is exactly what is recommended for your vehicle.
If you drive aggressively and make sufficiently sharp turns or your weight with luggage or a partner is close to the maximum recommended by the manufacturer of your equipment, the tires should be inflated to the maximum value indicated on your tire.
Driving with insufficiently inflated tires is dangerous. Your tires can become very hot and traction can be lost.
Tire pressures should only be checked when the motorcycle is cold or before driving off or after stopping when the tires have cooled down and have reached the ambient temperature.
The information on this website is intended for review, without being a public offer, determined by the provisions of Article 437 (2) of the Civil Code of the Russian Federation. To get accurate and timely information about the cost of goods and services, as well as their availability, you can contact our company "Yuka sport".
ukasport.ru
With the help of the "tire calculator" service, you will see whether this or that size of tires and rims is suitable for your car, select the optimal rim for the tire and you can easily convert measurements from inches to meters.Tire calculator for European tires
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Tire Calculator - InchesTires of American and European manufacturers are distinguished by their markings. European tires are metric. Therefore, when changing tires, there may be a problem with the translation of tire parameters. In most cases, this is a conversion from inches to centimeters. Enter the size in inches and click calculate. You will see the tire size in meters (dimensions will be rounded up to European parameters). | ||||||||||||||||||||||||||||||||||||||
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Thanks to the tire calculator, you can do the reverse calculation - convert values \u200b\u200bin "cm" and "mm" to inches. To do this, enter the standard size, diameter, width and height of the tire profile and press the "calculate" button. The calculator will convert the values \u200b\u200bto inches.
r15.net.ua
Tire Expert - Matching Inch and Metric Tire Sizes
This article, to a greater extent, of course, refers specifically to truck and special tires. Many of these tires have 2 size designations. Domestic tires were marked back in the days of the USSR and the dimensions were, of course, metric. With the advent of the era of active foreign economic relations, trade with other countries, import-export, tires with inch markings began to come to us, and domestic manufacturers also began to mark their goods in inch sizes.
Until now, there is no single size designation system, some manufacturers write the size in inches (for example 8.25R20), some in the metric system (for example 240-508), and some use both designations.
We have collected all the matches for you in the table below:
We remind you that the dimensions can be either the "-" sign (bias tire) or the letter "R" (radial tire)
| Metric size | = | Inch size |
| 220-508 | = | 7,50-20 |
| 240-508 | = | 8,25-20 |
| 260-508 | = | 9,00-20 |
| 280-508 | = | 10,00-20 |
| 300-508 | = | 11,00-20 |
| 320-508 | = | 12,00-20 |
| 320-457 | = | 12,00-18 |
| 320-406 | = | 12,00-16 |
| 370-508 | = | 14,00-20 |
| 365/85-20 | = | 14.00-20 |
| 385/65-22.5 | = | 15-22.5 |
| 425/65-22.5 | = | 16-22.5 |
| 445/65-22.5 | = | 18-22.5 |
| 280/80-18 | = | 10.5/80-18 |
| 335/80-18 | = | 12.5/80-18 |
| 335/80-20 | = | 12.5-20 |
| 375/75-20 | = | 16.0/70-20 |
| 405/70-20 | = | 16.0/70-20 |
| 440/80-24 | = | 16.9-24 |
| 460/70-24 | = | 17.5L24 |
| 500/70-24 | = | 19.5L24 |
| 480/80-26 | = | 18.4-26 |
| 440/80-28 | = | 16.9-28 |
| 385/95-24 | = | 14.00-24 |
| 385/95-25 | = | 14.00-25 |
| 445/95-24 | = | 16.00-24 |
| 445/95-25 | = | 16.00-25 |
| 505/95-25 | = | 18.00-25 |
| 445/80-25 | = | 17.5-25 |
| 525/80-25 | = | 20.5-25 |
| 550/65-25 | = | 20.5-25 |
| 650/65-25 | = | 23.5-25 |
| 750/65-25 | = | 26.5-25 |
| 875/65-25 | = | 29.5-25 |
| 1100/400-533 | = | 400/70-21 |
| 1200/500-508 | = | 500/70-20 |
| 1300/530-533 | = | 530/40-21 |
tyre-expert.ru
 | This program - a tire calculator - is a tool for correct replacement tires installed on the vehicle. If you decide to change the tire dimensions, this program will help you find out how much its external indicators change, calculate the speedometer error, monitor the changes ground clearance... We do not recommend installing wide tires during winter season - this leads to a deterioration in the quality of braking. |
xn - 80ajjgrjiv2c.xn - p1ai
Tire Calculator - InchesTo convert US tire sizes in inches to European tire sizes in mm, you can use the Inch Tire Calculator.For example, you need to recalculate the American tire size with the marking 31X10.5 R15 - into the European one. We enter 31 x 10.5 x 15 and get the result of the calculation: 267/76 R15, and a little below you will be shown the standard size 265/75 rounded up to the European standard R15. |
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www.mixmart.com.ua
Using a tire calculator, you can easily calculate how the outer dimensions of the wheel, the height of the ground clearance (clearance), the speedometer readings and other characteristics will change when tires with a different standard size are installed on your car. The calculator calculates all tire sizes in millimeters, and the vehicle speed in km / h.
And also the calculator will help to calculate the required rim width for a specific tire size.
How to use the tire calculator:
First enter the standard size installed on your car, and then the one that you want to install and click "calculate". The table on the right shows the results of the calculator's calculations.
detailed information about tire marking in the section: tire marking.
We recommend that you only install the factory tire sizes that are specified in the operating instructions for your machine. Installation of non-standard sizes may void the dealer's warranty, as well as impair the performance and driveability of the vehicle.
Tire calculator for European tires
Old size:
145 155 165 175 185 195 205 215 225 235 245 255 265 275 285 295 305 315 325
/ 25 30 35 40 45 50 55 60 65 70 75 80 85
12 13 14 15 16 17 18 19 20 21 22 23 24
Found in the directory:
175/70 R13 -
175/70 R13 -
When converting tire sizes on a calculator, keep in mind that:
With an increase in the rim diameter (and, as a consequence, a decrease in the height of the tire profile so that the outer diameter of the wheel remains unchanged), the load on the car's suspension increases, and comfort also deteriorates (the car will become noticeably stiffer).
With an excessive increase in the profile of the tire, the car becomes a "roll", it is less controlled and at critical values \u200b\u200bof the height of the profile, the tire may begin to cling to the parts of the body and suspension of the car, which will subsequently lead to its destruction.
