Decoded notation
275 mm / 45% / R / 20 in
Popular Tire Sizes
275/45R20 Tire Size — Dimensions & Revs
Decode 275/45R20 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 height123.8 mm
Rim diameter20 in
Overall diameter755.5 mm
Overall diameter29.74 in
Circumference2373.5 mm
Revolutions per mile678.1
Revolutions per km421.3