255/55R19 tire size

A 255/55R19 tire is 255 mm wide with a sidewall 55% of its width (140.2 mm), fits a 19-inch rim and has an overall diameter of 763 mm (30.0 in).

DimensionMetricImperial
Section width255 mm10.04 in
Sidewall height140.2 mm5.52 in
Rim diameter482.6 mm19 in
Overall diameter763.1 mm30.04 in
Circumference2,397.3 mm94.38 in
Revolutions417 per km671 per mile

Reading the size 255/55R19

255Width in mm55Aspect ratio (sidewall % of width)RRadial construction19Rim 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 255/55R19

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
255/50R20763 mm-0.0%100.0Compare
255/60R18763 mm+0.0%100.0Compare
255/65R17763 mm+0.0%100.0Compare
255/70R16763 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 255/55R19 with any size →

Other 19-inch sizes

225/35R19225/40R19225/55R19235/35R19235/40R19235/45R19235/50R19235/55R19245/35R19245/40R19245/45R19255/35R19255/40R19255/50R19