Decoded notation
255 mm / 40% / R / 19 in
Popular Tire Sizes
255/40R19 Tire Size — Dimensions & Revs
Decode 255/40R19 and calculate nominal width, sidewall, overall diameter, circumference and revolutions.
Calculated dimensions are nominal values based on tire-size notation; actual measured dimensions vary.
Width255 mm
Sidewall height102.0 mm
Rim diameter19 in
Overall diameter686.6 mm
Overall diameter27.03 in
Circumference2157.0 mm
Revolutions per mile746.1
Revolutions per km463.6