Decoded notation
245 mm / 50% / R / 18 in
Popular Tire Sizes
245/50R18 Tire Size — Dimensions & Revs
Decode 245/50R18 and calculate nominal width, sidewall, overall diameter, circumference and revolutions.
Calculated dimensions are nominal values based on tire-size notation; actual measured dimensions vary.
Width245 mm
Sidewall height122.5 mm
Rim diameter18 in
Overall diameter702.2 mm
Overall diameter27.65 in
Circumference2206.0 mm
Revolutions per mile729.5
Revolutions per km453.3