How tall is a 315/80R22.5 tire?

A 315/80R22.5 has a nominal overall diameter of 42.34 inches (1075 mm), calculated as the 22.5-inch wheel plus two sidewalls. This is the unloaded figure — a fitted tire sits fractionally shorter under the weight of the vehicle.

What wheel size does a 315/80R22.5 tire fit?

A 315/80R22.5 fits a wheel of 22.5 inches in diameter. The wheel also has to be within the rim width range the manufacturer publishes for this size, which is printed in the tire's spec sheet.

What do the numbers in 315/80R22.5 mean?

315 is the section width in millimetres. 80 is the aspect ratio — the sidewall is 80% of the width, so 252 mm here. R marks the construction (radial). 22.5 is the wheel diameter in inches.

Size Dimensions & Specs

Tires Size 315/80R22.5

Dimensions, specs, and every size 315/80R22.5 tire currently in stock

Overall Height

42.34"

1075 mm · calculated

Section Width

315 mm

12.4 inches

Sidewall Height

9.92"

252 mm · 80% profile

Wheel Diameter

22.5"

571.5 mm

315/80R22.5 Specifications

Read directly from the size code. Load index, speed rating, and rim width range vary by model.

Specification	Imperial	Metric
Section width	12.4 in	315 mm
Aspect ratio	80%	—
Sidewall height	9.92 in	252 mm
Overall diameter (calculated)	42.34 in	1075 mm
Wheel / rim diameter	22.5 in	571.5 mm
Construction	Radial	—

What does 315/80R22.5 mean?

Reading the code on your sidewall

Section width

315 mm

The distance from sidewall to sidewall across the tire's widest point.

Aspect ratio

80% profile

The sidewall stands 80% of the section width, which is 252 mm on this size.

Construction (R)

Radial

The body plies run across the tire at right angles to the direction of travel.

Wheel diameter

22.5 in

Fits a wheel measuring 22.5 inches across.

315/80R22.5 Questions & Answers

Dimensions and fitment guidelines for size 315/80R22.5

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