| Parameter |
Unit Type |
Units Used |
Description |
| tire width |
length |
inch(in) and millimeter(mm) |
The tires section width , tread width or overall width. |
| aspect ratio |
unitless |
none |
The sidewall height of the tire as a percentage of width. Also known as series and profile. |
tire or wheel
diameter and radius |
length |
inch(in) and millimeter(mm) |
The diameter or radius of the tire. |
| tire circumference |
length |
inch(in) and millimeter(mm) |
The length traveled when the tire makes one revolution. |
| sidewall height |
length |
inch(in) and millimeter(mm) |
The section height or the distance from the rim to the edge of the tire. |
| speed comparison |
n/a |
n/a |
The chart shows the actual speed of the original tire and upgrade tire if the speedometer has not been calibrated for the change in tire size. |
