255/40R21 Tires

255/40R21 tires have a diameter of 29.0", a section width of 10.0", and a wheel diameter of 21". The circumference is 91.2" and the revolutions per mile are 716.
Specs may vary by manufacturer. learn more

Visualizer / Alternate Sizes

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Visualizer

10.0"

29.0"

91.2"

21"

4.0"

716 Revs/Mile

255/40R21

Diameter : 29.0"

Width : 10.0"

Wheel : 21"

Sidewall : 4.0"

Circum. : 91.2"

Revs/Mile : 716

Upsizing Wheels or Tires?

When searching for the perfect tire for your vehicle you need options. Click the "Alternate Sizes" button to see a list of similar tire sizes. You can then change the wheel size to see alternate sizes on a different diameter wheel.

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