245/50R20 tire size

A 245/50R20 tire is 245 mm wide with a sidewall 50% of its width (122.5 mm), fits a 20-inch rim and has an overall diameter of 753 mm (29.6 in).

DimensionMetricImperial
Section width245 mm9.65 in
Sidewall height122.5 mm4.82 in
Rim diameter508.0 mm20 in
Overall diameter753.0 mm29.65 in
Circumference2,365.6 mm93.13 in
Revolutions423 per km680 per mile

Reading the size 245/50R20

245Width in mm50Aspect ratio (sidewall % of width)RRadial construction20Rim 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 245/50R20

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
245/60R18751 mm-0.2%99.8Compare
275/45R20756 mm+0.3%100.3Compare
245/65R17750 mm-0.4%99.6Compare
245/70R16749 mm-0.5%99.5Compare
235/65R18763 mm+1.3%101.3Compare
255/50R20763 mm+1.3%101.3Compare
255/55R19763 mm+1.3%101.3
255/60R18763 mm+1.4%101.4

Compare 245/50R20 with any size →

Other 20-inch sizes

245/35R20245/40R20245/45R20255/35R20255/45R20255/50R20265/50R20275/40R20275/45R20275/55R20275/60R20275/65R20