Decoded notation
255 mm / 35% / R / 20 in
Popular Tire Sizes
255/35R20 Tire Size — Dimensions & Revs
Decode 255/35R20 and calculate nominal width, sidewall, overall diameter, circumference and revolutions.
Calculated dimensions are nominal values based on tire-size notation; actual measured dimensions vary.
Width255 mm
Sidewall height89.3 mm
Rim diameter20 in
Overall diameter686.5 mm
Overall diameter27.03 in
Circumference2156.7 mm
Revolutions per mile746.2
Revolutions per km463.7