315/75R15 tire size
A 315/75R15 tire stands 33.6 inches tall and 12.4 inches wide, with a 9.3-inch sidewall on a 15-inch rim.
- Overall height
- 33.6 in854 mm
- Section width
- 12.4 in315 mm
- Sidewall height
- 9.3 in236 mm
- Rim diameter
- 15 in381 mm
- Circumference
- 105.6 in2681 mm
- Revolutions per mile
- 600373 per km
- Inch size
- 33.6x12.4R15
Compare it with any other size in the tire size calculator.
Sizes you can swap to
These 15-inch sizes are within two width steps and 3% of a 315/75R15's overall height, the usual limit before the speedometer, ABS and transmission notice. The closest is 305/75R15, 1.8% shorter (0.59 in). Wider sizes also need room in the wheel well and a rim width that suits them.
Plus and minus sizes
Changing rim size means changing the sidewall to keep the same overall height. On 16-inch or 17-inch rims, these are the closest matches to a 315/75R15.
Other 15-inch sizes near 315/75R15
315 mm wide, other sidewalls
75 series, other widths
See the other sizes for this rim on 15-inch tire sizes.
Shop 315/75R15 tires
These open each store's own list of 315/75R15 tires, where you can filter by type, load and speed rating.
315/75R15 questions
How tall is a 315/75R15 tire?
About 33.6 inches (854 mm) from the ground to the top of the tread, unloaded. On the vehicle, carrying weight, it sits a little lower.
What does 315/75R15 mean?
315 is the section width in millimetres (12.4 in). 75 means the sidewall is 75% of that width: 236 mm, or 9.3 in. R means radial construction, and 15 is the rim diameter in inches.
What is 315/75R15 in inches?
In inch terms it is 33.6x12.4R15: 33.6 inches tall, 12.4 inches wide, for a 15-inch rim.
How many revolutions per mile does a 315/75R15 make?
About 600 turns per mile, worked out from its unloaded circumference of 105.6 inches. Makers list slightly higher numbers for their own tires, because a loaded tire rolls on a smaller radius.