Enter the tire sidewall height (in) and the tire width (in) into the Tire Aspect Ratio Calculator. The calculator will evaluate and display the Tire Aspect Ratio.
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Tire Aspect Ratio Formula
The following formula is used to calculate the Tire Aspect Ratio.
TAR = SH / W
- Where TAR is the Tire Aspect Ratio (height:width)
- SH is the tire sidewall height (in)
- W is the tire width (in)
How to Calculate Tire Aspect Ratio?
The following example problems outline how to calculate Tire Aspect Ratio.
Example Problem #1:
- First, determine the tire sidewall height (in).
- The tire sidewall height (in) is given as: 12.
- Next, determine the tire width (in).
- The tire width (in) is provided as: 15.
- Finally, calculate the Tire Aspect Ratio using the equation above:
TAR = SH / W
The values given above are inserted into the equation below and the solution is calculated:
TAR = 12 / 15 = .8 (height:width)
Example Problem #2:
For this problem, the variables required are provided below:
tire sidewall height (in) = 13
tire width (in) = 16
Test your knowledge using the equation and check your answer with the calculator above.
TAR = SH / W = ?
