Decoded notation
275 mm / 55% / R / 20 in
Popular Tire Sizes
275/55R20 Tire Size — Dimensions & Revs
Decode 275/55R20 and calculate nominal width, sidewall, overall diameter, circumference and revolutions.
Calculated dimensions are nominal values based on tire-size notation; actual measured dimensions vary.
Width275 mm
Sidewall height151.3 mm
Rim diameter20 in
Overall diameter810.5 mm
Overall diameter31.91 in
Circumference2546.3 mm
Revolutions per mile632.0
Revolutions per km392.7