31X11.5R15 conversion to metric size

31X11.5R15 tires are 31.0″ tall, have a section width of 11.5″, and fit wheels with a diameter of 15. The circumference is 97.3″ that translates into 651 revolutions per mile. As a rule, they can be mounted on the wheels with 15″ x 8-10″ rim width. In the metric system, the equivalent tire size is 292/70/R15.

What is 31X11.5R15 in inches?

Tire Diameter:31.0″
Tire Section Width:11.5″
Rim Width Range:15″ x 8-10″
Sidewall Height:8.0″

Alternate sizes – Upsizing Wheels or Tires?

What are 31X11.5R15 close equivalents?

Check out the chart below to find possible alternatives to the 31X11.5R15 tire size staying within the 3%-range of the tire diameter, allowing to choose wider wheels or tires with smaller sidewalls. A good rule of thumb is to avoid decreasing the diameter of the wheel. If you are not sure about the custom sizes, consult the experts or stick to the factory tire size.

Tire sizeDiameterDifferenceWidthWheel size
Upsizing chart

How to decode 31X11.5R15 tire size in metric?

Trying to decode the size of the tires? Scroll down the page to learn what all these numbers on the sidewall stand for.

P or LTThe first letter in the string denotes the class. P stands for passenger vehicles, LT is intended for light trucks carrying heavy loads.
292It means the width of the tire is 292 millimeters
70The tire has an aspect ratio of 70. To put it simple, the sidewall height is 70% of the width, so it would be 8.0″.
RR stands for the Radial, a standard construction method for about 99% of tires.
15The tire is designed to fit 15″ x 8-10″ rims that are 15 inches in diameter.

Popular questions about 31X11.5R15 tire size

How wide is a 31X11.5R15 tire?

The tires of the given size have a section width of 11.5″ inches.

How tall is a 31X11.5R15 tire?

The height of the following tire size equals 31.0″ inches.

What rims will fit 31X11.5R15 tires?

For each tire size, often there are several wheel sizes. You can’t put very wide tires on narrow rims or vise versa. You need the rim size of 15″ x 8-10″ for 15″ x 8-10″ tires.

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