My Tire Guide

305/40R22 tire size

A 305/40R22 tire stands 31.6 inches tall and 12.0 inches wide, with a 4.8-inch sidewall on a 22-inch rim.

31.6″OVERALL 31.6 IN · RIM 22 IN12.0″4.8″WIDTH · SIDEWALL
Overall height
31.6 in803 mm
Section width
12.0 in305 mm
Sidewall height
4.8 in122 mm
Rim diameter
22 in559 mm
Circumference
99.3 in2522 mm
Revolutions per mile
638396 per km
Inch size
31.6x12.0R22

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

Sizes you can swap to

These 22-inch sizes are within two width steps and 3% of a 305/40R22's overall height, the usual limit before the speedometer, ABS and transmission notice. The closest is 295/40R22, 1.0% shorter (0.31 in). Wider sizes also need room in the wheel well and a rim width that suits them.

SizeHeightWidthAt 60 mph
295/40R22−1.0%−0.31 in−10 mm59.4 mph
315/40R22+1.0%+0.31 in+10 mm60.6 mph
285/45R22+1.6%+0.49 in−20 mm60.9 mph
285/40R22−2.0%−0.63 in−20 mm58.8 mph
295/45R22+2.7%+0.85 in−10 mm61.6 mph
315/35R22−2.9%−0.93 in+10 mm58.2 mph

Plus and minus sizes

Changing rim size means changing the sidewall to keep the same overall height. On 20-inch or 21-inch or 24-inch rims, these are the closest matches to a 305/40R22.

SizeHeightWidthAt 60 mph
295/50R20+0.0%+0.01 in−10 mm60.0 mph
295/45R21−0.5%−0.15 in−10 mm59.7 mph
275/35R24−0.1%−0.03 in−30 mm59.9 mph

Other 22-inch sizes near 305/40R22

305 mm wide, other sidewalls

40 series, other widths

See the other sizes for this rim on 22-inch tire sizes.

Shop 305/40R22 tires

These open each store's own list of 305/40R22 tires, where you can filter by type, load and speed rating.

305/40R22 questions

How tall is a 305/40R22 tire?

About 31.6 inches (803 mm) from the ground to the top of the tread, unloaded. On the vehicle, carrying weight, it sits a little lower.

What does 305/40R22 mean?

305 is the section width in millimetres (12.0 in). 40 means the sidewall is 40% of that width: 122 mm, or 4.8 in. R means radial construction, and 22 is the rim diameter in inches.

Can I use 295/40R22 instead of 305/40R22?

295/40R22 is 1.0% shorter (0.31 in) and 10 mm narrower, which is inside the usual 3% rule. With it fitted, the speedometer shows 60 mph when you are doing 59.4 mph.

What is 305/40R22 in inches?

In inch terms it is 31.6x12.0R22: 31.6 inches tall, 12.0 inches wide, for a 22-inch rim.

How many revolutions per mile does a 305/40R22 make?

About 638 turns per mile, worked out from its unloaded circumference of 99.3 inches. Makers list slightly higher numbers for their own tires, because a loaded tire rolls on a smaller radius.