My Tire Guide

305/70R17 tire size

A 305/70R17 tire stands 33.8 inches tall and 12.0 inches wide, with a 8.4-inch sidewall on a 17-inch rim.

33.8″OVERALL 33.8 IN · RIM 17 IN12.0″8.4″WIDTH · SIDEWALL
Overall height
33.8 in859 mm
Section width
12.0 in305 mm
Sidewall height
8.4 in214 mm
Rim diameter
17 in432 mm
Circumference
106.2 in2698 mm
Revolutions per mile
596371 per km
Inch size
33.8x12.0R17

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 305/70R17's overall height, the usual limit before the speedometer, ABS and transmission notice. The closest is 285/75R17, 0.1% taller (0.02 in). Wider sizes also need room in the wheel well and a rim width that suits them.

SizeHeightWidthAt 60 mph
285/75R17+0.1%+0.02 in−20 mm60.0 mph
295/70R17−1.6%−0.55 in−10 mm59.0 mph
315/70R17+1.6%+0.55 in+10 mm61.0 mph
295/75R17+1.8%+0.61 in−10 mm61.1 mph
315/65R17−2.0%−0.69 in+10 mm58.8 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 305/70R17.

SizeHeightWidthAt 60 mph
315/75R15−0.6%−0.21 in+10 mm59.6 mph
305/75R16+0.6%+0.20 in±0 mm60.4 mph
285/70R18−0.3%−0.10 in−20 mm59.8 mph
285/65R19−0.7%−0.22 in−20 mm59.6 mph

Other 17-inch sizes near 305/70R17

305 mm wide, other sidewalls

70 series, other widths

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

Shop 305/70R17 tires

These open each store's own list of 305/70R17 tires, where you can filter by type, load and speed rating.

305/70R17 questions

How tall is a 305/70R17 tire?

About 33.8 inches (859 mm) from the ground to the top of the tread, unloaded. On the vehicle, carrying weight, it sits a little lower.

What does 305/70R17 mean?

305 is the section width in millimetres (12.0 in). 70 means the sidewall is 70% of that width: 214 mm, or 8.4 in. R means radial construction, and 17 is the rim diameter in inches.

Can I use 285/75R17 instead of 305/70R17?

285/75R17 is 0.1% taller (0.02 in) and 20 mm narrower, which is inside the usual 3% rule. With it fitted, the speedometer shows 60 mph when you are doing 60.0 mph.

What is 305/70R17 in inches?

In inch terms it is 33.8x12.0R17: 33.8 inches tall, 12.0 inches wide, for a 17-inch rim.

How many revolutions per mile does a 305/70R17 make?

About 596 turns per mile, worked out from its unloaded circumference of 106.2 inches. Makers list slightly higher numbers for their own tires, because a loaded tire rolls on a smaller radius.