Decoded notation
265 mm / 55% / R / 18 in
Popular Tire Sizes
265/55R18 Tire Size — Dimensions & Revs
Decode 265/55R18 and calculate nominal width, sidewall, overall diameter, circumference and revolutions.
Calculated dimensions are nominal values based on tire-size notation; actual measured dimensions vary.
Width265 mm
Sidewall height145.8 mm
Rim diameter18 in
Overall diameter748.7 mm
Overall diameter29.48 in
Circumference2352.1 mm
Revolutions per mile684.2
Revolutions per km425.2