245/45R19 tire size

A 245/45R19 tire is 245 mm wide with a sidewall 45% of its width (110.2 mm), fits a 19-inch rim and has an overall diameter of 703 mm (27.7 in).

DimensionMetricImperial
Section width245 mm9.65 in
Sidewall height110.2 mm4.34 in
Rim diameter482.6 mm19 in
Overall diameter703.1 mm27.68 in
Circumference2,208.9 mm86.96 in
Revolutions453 per km729 per mile

Reading the size 245/45R19

245Width in mm45Aspect 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 245/45R19

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
245/40R20704 mm+0.1%100.1Compare
225/60R17702 mm-0.2%99.8Compare
225/55R18705 mm+0.2%100.2Compare
215/70R16707 mm+0.6%100.6Compare
215/65R17711 mm+1.2%101.2Compare
235/65R16712 mm+1.3%101.3Compare
235/45R19694 mm-1.3%98.7
215/55R18694 mm-1.3%98.7

Compare 245/45R19 with any size →

Other 19-inch sizes

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