My Tire Guide

40x15.50R20 tire size

A 40x15.50R20 tire is 40 inches tall and 15.5 inches wide on a 20-inch rim, with a 10.0-inch sidewall.

40.0″OVERALL 40.0 IN · RIM 20 IN15.5″10.0″WIDTH · SIDEWALL
Overall height
40 in1016 mm
Section width
15.50 in394 mm
Sidewall height
10.0 in254 mm
Rim diameter
20 in508 mm
Circumference
125.7 in3192 mm
Revolutions per mile
504313 per km

40x15.50R20 in metric

No common metric 20-inch size comes within 3% of a 40x15.50R20's height at a similar width.

Other inch sizes

On 20-inch rims

browse 20-inch tire sizes.

Shop 40x15.50R20 tires

These open each store's own list of 40x15.50R20 tires.

40x15.50R20 questions

What does 40x15.50R20 mean?

It is an inch size: 40 inches overall height, 15.50 inches section width, R for radial, and a 20-inch rim. Inch sizes like this are light-truck tires, sold in load ranges such as C, D or E.

How many revolutions per mile does a 40x15.50R20 make?

About 504, worked out from its 125.7-inch unloaded circumference. Loaded on the truck it turns slightly more.