Tires Size Chart. To convert the metric unit to an inch, multiply the first number by the second number divided by 100, which gives you the sidewall height in millimeters, then divide that by 25.4 to convert it to an inch. Specs are based on a properly inflated tire mounted.
The dimensions computed by our calculator use the following equations: Here’s one example of the same tire you saw in the thumbnail up above, and what it says on the sidewall…. Tirebuyer has one of the largest selections of all terrain and mud terrain tires in stock ready to ship fast and free.