Decoded notation
255 mm / 50% / R / 17 in
Popular Tire Sizes
255/50R17 Tire Size — Dimensions & Revs
Decode 255/50R17 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 height127.5 mm
Rim diameter17 in
Overall diameter686.8 mm
Overall diameter27.04 in
Circumference2157.6 mm
Revolutions per mile745.9
Revolutions per km463.5