My Tire Guide

315/45R17 tire size

A 315/45R17 tire stands 28.2 inches tall and 12.4 inches wide, with a 5.6-inch sidewall on a 17-inch rim.

28.2″OVERALL 28.2 IN · RIM 17 IN12.4″5.6″WIDTH · SIDEWALL
Overall height
28.2 in715 mm
Section width
12.4 in315 mm
Sidewall height
5.6 in142 mm
Rim diameter
17 in432 mm
Circumference
88.5 in2247 mm
Revolutions per mile
716445 per km
Inch size
28.2x12.4R17

Compare it with any other size in the tire size calculator.

Sizes you can swap to

These 17-inch sizes are within two width steps and 3% of a 315/45R17's overall height, the usual limit before the speedometer, ABS and transmission notice. The closest is 305/45R17, 1.3% shorter (0.35 in). Wider sizes also need room in the wheel well and a rim width that suits them.

SizeHeightWidthAt 60 mph
305/45R17−1.3%−0.35 in−10 mm59.2 mph
295/50R17+1.6%+0.45 in−20 mm61.0 mph
295/45R17−2.5%−0.71 in−20 mm58.5 mph

Plus and minus sizes

Changing rim size means changing the sidewall to keep the same overall height. On 15-inch or 16-inch or 18-inch or 19-inch rims, these are the closest matches to a 315/45R17.

SizeHeightWidthAt 60 mph
305/55R15+0.2%+0.05 in−10 mm60.1 mph
305/50R16−0.5%−0.15 in−10 mm59.7 mph
285/45R18−0.2%−0.06 in−30 mm59.9 mph
295/40R19+0.5%+0.13 in−20 mm60.3 mph

Other 17-inch sizes near 315/45R17

315 mm wide, other sidewalls

45 series, other widths

See the other sizes for this rim on 17-inch tire sizes.

Shop 315/45R17 tires

These open each store's own list of 315/45R17 tires, where you can filter by type, load and speed rating.

315/45R17 questions

How tall is a 315/45R17 tire?

About 28.2 inches (715 mm) from the ground to the top of the tread, unloaded. On the vehicle, carrying weight, it sits a little lower.

What does 315/45R17 mean?

315 is the section width in millimetres (12.4 in). 45 means the sidewall is 45% of that width: 142 mm, or 5.6 in. R means radial construction, and 17 is the rim diameter in inches.

Can I use 305/45R17 instead of 315/45R17?

305/45R17 is 1.3% shorter (0.35 in) and 10 mm narrower, which is inside the usual 3% rule. With it fitted, the speedometer shows 60 mph when you are doing 59.2 mph.

What is 315/45R17 in inches?

In inch terms it is 28.2x12.4R17: 28.2 inches tall, 12.4 inches wide, for a 17-inch rim.

How many revolutions per mile does a 315/45R17 make?

About 716 turns per mile, worked out from its unloaded circumference of 88.5 inches. Makers list slightly higher numbers for their own tires, because a loaded tire rolls on a smaller radius.