Decoded notation
235 mm / 55% / R / 20 in
Popular Tire Sizes
235/55R20 Tire Size — Dimensions & Revs
Decode 235/55R20 and calculate nominal width, sidewall, overall diameter, circumference and revolutions.
Calculated dimensions are nominal values based on tire-size notation; actual measured dimensions vary.
Width235 mm
Sidewall height129.3 mm
Rim diameter20 in
Overall diameter766.5 mm
Overall diameter30.18 in
Circumference2408.0 mm
Revolutions per mile668.3
Revolutions per km415.3