Decoded notation
255 mm / 45% / R / 17 in
Popular Tire Sizes
255/45R17 Tire Size — Dimensions & Revs
Decode 255/45R17 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 height114.8 mm
Rim diameter17 in
Overall diameter661.3 mm
Overall diameter26.04 in
Circumference2077.5 mm
Revolutions per mile774.6
Revolutions per km481.3