175/65R15 tire size

A 175/65R15 tire is 175 mm wide with a sidewall 65% of its width (113.8 mm), fits a 15-inch rim and has an overall diameter of 608 mm (24.0 in).

DimensionMetricImperial
Section width175 mm6.89 in
Sidewall height113.8 mm4.48 in
Rim diameter381.0 mm15 in
Overall diameter608.5 mm23.96 in
Circumference1,911.7 mm75.26 in
Revolutions523 per km842 per mile

Reading the size 175/65R15

175Width in mm65Aspect ratio (sidewall % of width)RRadial construction15Rim 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 175/65R15

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
205/50R16611 mm+0.5%100.5Compare
215/40R17604 mm-0.8%99.2Compare
185/60R15603 mm-0.9%99.1Compare
185/70R14615 mm+1.0%101.0Compare
195/60R15615 mm+1.1%101.1Compare
205/45R17616 mm+1.3%101.3Compare
175/70R14601 mm-1.3%98.7Compare
195/55R16621 mm+2.0%102.0

Compare 175/65R15 with any size →

Other 15-inch sizes

185/55R15185/60R15185/65R15195/50R15195/55R15195/60R15195/65R15205/60R15205/65R15215/70R15235/75R15