Calculate Tire Size
This form allows you to calculate the height of your tire sidewall based on the aspect ratio and width of your tire. Optionally, given the height of your wheel, this form will also calculate the overall height of your tire.  The information required is usually printed on the side of your tire in the form of something like 185/60R16. In this example, the width of the tire is 185mm, it has an aspect ratio of 60% (that is, the sidewall height is 60% of the width of the tire), and the wheel size is 16 inches.  

 

Wheel size in inches (optional)
Tire width in MM
Aspect Ratio
Height of sidewall in inches
Overall tire height in inches