40X15.5R28 conversion to metric size

40X15.5R28 tires are 40.0″ tall, have a section width of 15.5″, and fit wheels with a diameter of 28. The circumference is 125.6″ that translates into 504 revolutions per mile. As a rule, they can be mounted on the wheels with 28″ rim width. In the metric system, the equivalent tire size is 394/39/R28.

What is 40X15.5R28 in inches?

Tire Diameter:40.0″
Tire Section Width:15.5″
Rim Width Range:28″
Sidewall Height:6.0″
Circumference:125.6″
Revs/Mile:504

Alternate sizes – Upsizing Wheels or Tires?

What are 40X15.5R28 close equivalents?

Check out the chart below to find possible alternatives to the 40X15.5R28 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.

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Tire sizeDiameterDifferenceWidthWheel size
Upsizing chart

How to decode 40X15.5R28 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.
394It means the width of the tire is 394 millimeters
39The tire has an aspect ratio of 39. To put it simple, the sidewall height is 39% of the width, so it would be 6.0″.
RR stands for the Radial, a standard construction method for about 99% of tires.
28The tire is designed to fit 28″ rims that are 28 inches in diameter.

Popular questions about 40X15.5R28 tire size

How wide is a 40X15.5R28 tire?

The tires of the given size have a section width of 15.5″ inches.

How tall is a 40X15.5R28 tire?

The height of the following tire size equals 40.0″ inches.

What rims will fit 40X15.5R28 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 28″ for 28″ tires.

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