Decoded notation
245 mm / 45% / R / 18 in
Popular Tire Sizes
245/45R18 Tire Size — Dimensions & Revs
Decode 245/45R18 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 height110.3 mm
Rim diameter18 in
Overall diameter677.7 mm
Overall diameter26.68 in
Circumference2129.1 mm
Revolutions per mile755.9
Revolutions per km469.7