My Tire Guide

305/40R24 tire size

A 305/40R24 tire stands 33.6 inches tall and 12.0 inches wide, with a 4.8-inch sidewall on a 24-inch rim.

33.6″OVERALL 33.6 IN · RIM 24 IN12.0″4.8″WIDTH · SIDEWALL
Overall height
33.6 in854 mm
Section width
12.0 in305 mm
Sidewall height
4.8 in122 mm
Rim diameter
24 in610 mm
Circumference
105.6 in2682 mm
Revolutions per mile
600373 per km
Inch size
33.6x12.0R24

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

Sizes you can swap to

These 24-inch sizes are within two width steps and 3% of a 305/40R24's overall height, the usual limit before the speedometer, ABS and transmission notice. The closest is 295/40R24, 0.9% shorter (0.31 in). Wider sizes also need room in the wheel well and a rim width that suits them.

SizeHeightWidthAt 60 mph
295/40R24−0.9%−0.31 in−10 mm59.4 mph
315/40R24+0.9%+0.31 in+10 mm60.6 mph
285/45R24+1.5%+0.49 in−20 mm60.9 mph
285/40R24−1.9%−0.63 in−20 mm58.9 mph
325/40R24+1.9%+0.63 in+20 mm61.1 mph
325/35R24−1.9%−0.65 in+20 mm58.8 mph
295/45R24+2.5%+0.85 in−10 mm61.5 mph
315/35R24−2.8%−0.93 in+10 mm58.3 mph

Plus and minus sizes

Changing rim size means changing the sidewall to keep the same overall height. On 22-inch rims, these are the closest matches to a 305/40R24.

SizeHeightWidthAt 60 mph
295/50R22+0.0%+0.01 in−10 mm60.0 mph

Other 24-inch sizes near 305/40R24

305 mm wide, other sidewalls

40 series, other widths

See the other sizes for this rim on 24-inch tire sizes.

Shop 305/40R24 tires

These open each store's own list of 305/40R24 tires, where you can filter by type, load and speed rating.

305/40R24 questions

How tall is a 305/40R24 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 305/40R24 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 24 is the rim diameter in inches.

Can I use 285/40R24 instead of 305/40R24?

285/40R24 is 1.9% shorter (0.63 in) and 20 mm narrower, which is inside the usual 3% rule. With it fitted, the speedometer shows 60 mph when you are doing 58.9 mph.

What is 305/40R24 in inches?

In inch terms it is 33.6x12.0R24: 33.6 inches tall, 12.0 inches wide, for a 24-inch rim.

How many revolutions per mile does a 305/40R24 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.