245/40R19 tire size

A 245/40R19 tire is 245 mm wide with a sidewall 40% of its width (98.0 mm), fits a 19-inch rim and has an overall diameter of 679 mm (26.7 in).

DimensionMetricImperial
Section width245 mm9.65 in
Sidewall height98.0 mm3.86 in
Rim diameter482.6 mm19 in
Overall diameter678.6 mm26.72 in
Circumference2,131.9 mm83.93 in
Revolutions469 per km755 per mile

Reading the size 245/40R19

245Width in mm40Aspect 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 245/40R19

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
225/55R17679 mm+0.1%100.1Compare
245/45R18678 mm-0.1%99.9Compare
245/35R20680 mm+0.1%100.1Compare
225/60R16676 mm-0.3%99.7Compare
215/70R15682 mm+0.5%100.5Compare
225/50R18682 mm+0.5%100.5Compare
205/65R16673 mm-0.8%99.2Compare
215/65R16686 mm+1.1%101.1

Compare 245/40R19 with any size →

Other 19-inch sizes

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