Tire A
Example: 205/55 R16
Tire B
Enter the tire you want to compare.
How it works
Overall diameter = 2 × sidewall + rim diameter. Results are estimates based on nominal tire dimensions.
Tire A overall diameter24.88 in
Tire B overall diameter25.31 in
Diameter difference+0.43 in
Percentage difference+1.72%
Tire A circumference78.16 in
Tire B circumference79.50 in
This calculator compares dimensions only; verify vehicle fitment, load rating, speed rating, wheel width and manufacturer guidance before changing tire sizes.