Decoded notation
285 mm / 60% / R / 20 in
Popular Tire Sizes
285/60R20 Tire Size — Dimensions & Revs
Decode 285/60R20 and calculate nominal width, sidewall, overall diameter, circumference and revolutions.
Calculated dimensions are nominal values based on tire-size notation; actual measured dimensions vary.
Width285 mm
Sidewall height171.0 mm
Rim diameter20 in
Overall diameter850.0 mm
Overall diameter33.46 in
Circumference2670.4 mm
Revolutions per mile602.7
Revolutions per km374.5