Tire Size Calculators
- Date: 2010-09-07 - Word Count: 330
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Some of the time it can be practical to exchange your original tires for another size.
For many owners changing sizes is hard due to not knowing what tires can be switched for others.
This article will explain how sizes relate to different measurements.
Tire Numbers:
The starting digits of a tire's size relates the tire's width. This is the length between what one can see from the outer side wall to the inner sidewall (the opposite part of the tire you can't see under the car).
The following set of digits define the aspect ratio or profile. This is the percent of the sidewall's length compared to the section width. Simply the distance of the tire's length from the wheel in comparison to the inside length. You can consider it like a box with separate depth, height, and width sizes to visualize it a lot easier.
The 3rd pair of values relates the wheel size in inches.
Now to see how tire sizes compare
Off the bat it is important|vital|critical} that I mention that the size of the tires should be within three percent of each other as a simple rule.
The usual way to compare sizes is to obtain the total diameter of the tire and test it with the possible tire.
To get the diameter of the tires you must get the side wall height. To get this multiply the section width by the profile or aspect ratio percent and double it. For example: 195*.45*2= 175.5.
Second change the rim size from inches (multiply it by 25.4) to get mms and add it to the prior equation.
After that simply divide the replacement values by the oem tire values - next all you must to do is subtract 1 from it - and multiply by one-hundred. This will illustrate the percentage size difference between the oem tire and possible alternate tire.
Keep in mind that the average potential tire needs to be within three percent bigger or smaller and one should always confirm the replacement tire with the possible seller for errors.
For many owners changing sizes is hard due to not knowing what tires can be switched for others.
This article will explain how sizes relate to different measurements.
Tire Numbers:
The starting digits of a tire's size relates the tire's width. This is the length between what one can see from the outer side wall to the inner sidewall (the opposite part of the tire you can't see under the car).
The following set of digits define the aspect ratio or profile. This is the percent of the sidewall's length compared to the section width. Simply the distance of the tire's length from the wheel in comparison to the inside length. You can consider it like a box with separate depth, height, and width sizes to visualize it a lot easier.
The 3rd pair of values relates the wheel size in inches.
Now to see how tire sizes compare
Off the bat it is important|vital|critical} that I mention that the size of the tires should be within three percent of each other as a simple rule.
The usual way to compare sizes is to obtain the total diameter of the tire and test it with the possible tire.
To get the diameter of the tires you must get the side wall height. To get this multiply the section width by the profile or aspect ratio percent and double it. For example: 195*.45*2= 175.5.
Second change the rim size from inches (multiply it by 25.4) to get mms and add it to the prior equation.
After that simply divide the replacement values by the oem tire values - next all you must to do is subtract 1 from it - and multiply by one-hundred. This will illustrate the percentage size difference between the oem tire and possible alternate tire.
Keep in mind that the average potential tire needs to be within three percent bigger or smaller and one should always confirm the replacement tire with the possible seller for errors.
Related Tags: tire sizes, tire size calculators, oem tires, oem tire size, tire size calculations
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