My Tire Guide

235/45R17 tire size

A 235/45R17 tire stands 25.3 inches tall and 9.3 inches wide, with a 4.2-inch sidewall on a 17-inch rim.

25.3″OVERALL 25.3 IN · RIM 17 IN9.3″4.2″WIDTH · SIDEWALL
Overall height
25.3 in643 mm
Section width
9.3 in235 mm
Sidewall height
4.2 in106 mm
Rim diameter
17 in432 mm
Circumference
79.6 in2021 mm
Revolutions per mile
796495 per km
Inch size
25.3x9.3R17

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 235/45R17's overall height, the usual limit before the speedometer, ABS and transmission notice. The closest is 215/50R17, 0.5% taller (0.14 in). Wider sizes also need room in the wheel well and a rim width that suits them.

SizeHeightWidthAt 60 mph
215/50R17+0.5%+0.14 in−20 mm60.3 mph
255/40R17−1.2%−0.30 in+20 mm59.3 mph
225/45R17−1.4%−0.35 in−10 mm59.2 mph
245/45R17+1.4%+0.35 in+10 mm60.8 mph
225/50R17+2.1%+0.53 in−10 mm61.3 mph
245/40R17−2.4%−0.61 in+10 mm58.6 mph
255/45R17+2.8%+0.71 in+20 mm61.7 mph
215/45R17−2.8%−0.71 in−20 mm58.3 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 235/45R17.

SizeHeightWidthAt 60 mph
265/50R15+0.4%+0.11 in+30 mm60.3 mph
215/55R16−0.1%−0.02 in−20 mm60.0 mph
265/35R18−0.1%−0.02 in+30 mm59.9 mph
225/35R19−0.5%−0.13 in−10 mm59.7 mph

Other 17-inch sizes near 235/45R17

235 mm wide, other sidewalls

45 series, other widths

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

Shop 235/45R17 tires

These open each store's own list of 235/45R17 tires, where you can filter by type, load and speed rating.

235/45R17 questions

How tall is a 235/45R17 tire?

About 25.3 inches (643 mm) from the ground to the top of the tread, unloaded. On the vehicle, carrying weight, it sits a little lower.

What does 235/45R17 mean?

235 is the section width in millimetres (9.3 in). 45 means the sidewall is 45% of that width: 106 mm, or 4.2 in. R means radial construction, and 17 is the rim diameter in inches.

Can I use 215/50R17 instead of 235/45R17?

215/50R17 is 0.5% taller (0.14 in) and 20 mm narrower, which is inside the usual 3% rule. With it fitted, the speedometer shows 60 mph when you are doing 60.3 mph.

What is 235/45R17 in inches?

In inch terms it is 25.3x9.3R17: 25.3 inches tall, 9.3 inches wide, for a 17-inch rim.

How many revolutions per mile does a 235/45R17 make?

About 796 turns per mile, worked out from its unloaded circumference of 79.6 inches. Makers list slightly higher numbers for their own tires, because a loaded tire rolls on a smaller radius.