Decoded notation
225 mm / 35% / R / 18 in
Popular Tire Sizes
225/35R18 Tire Size — Dimensions & Revs
Decode 225/35R18 and calculate nominal width, sidewall, overall diameter, circumference and revolutions.
Calculated dimensions are nominal values based on tire-size notation; actual measured dimensions vary.
Width225 mm
Sidewall height78.8 mm
Rim diameter18 in
Overall diameter614.7 mm
Overall diameter24.20 in
Circumference1931.1 mm
Revolutions per mile833.4
Revolutions per km517.8