255/65R17 tire size

A 255/65R17 tire is 255 mm wide with a sidewall 65% of its width (165.8 mm), fits a 17-inch rim and has an overall diameter of 763 mm (30.1 in).

DimensionMetricImperial
Section width255 mm10.04 in
Sidewall height165.8 mm6.53 in
Rim diameter431.8 mm17 in
Overall diameter763.3 mm30.05 in
Circumference2,398.0 mm94.41 in
Revolutions417 per km671 per mile

Reading the size 255/65R17

255Width in mm65Aspect ratio (sidewall % of width)RRadial construction17Rim diameter in inches

The load index and speed rating (for example 91V) follow the size on the sidewall. Replacement tires should match or exceed the original load index and speed rating.

Alternative sizes within 3% of 255/65R17

A replacement size should stay within about 3% of the original diameter so the speedometer, ABS and transmission stay accurate. Always check clearance, load index and the vehicle manufacturer's approved sizes.

SizeDiameterDifferenceSpeedo reads 100 → actual
255/60R18763 mm-0.0%100.0Compare
255/70R16763 mm+0.0%100.0Compare
255/55R19763 mm-0.0%100.0Compare
255/50R20763 mm-0.0%100.0Compare
235/65R18763 mm-0.1%99.9Compare
275/45R20756 mm-1.0%99.0Compare
265/50R20773 mm+1.3%101.3
245/50R20753 mm-1.3%98.7

Compare 255/65R17 with any size →

Other 17-inch sizes