How tall is a 315/25ZR26 tire?

A 315/25ZR26 has a nominal overall diameter of 32.2 inches (818 mm), calculated as the 26-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 315/25ZR26 tire fit?

A 315/25ZR26 fits a wheel of 26 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 315/25ZR26 mean?

315 is the section width in millimetres. 25 is the aspect ratio — the sidewall is 25% of the width, so 78.8 mm here. ZR marks the construction (radial). 26 is the wheel diameter in inches.

Size Dimensions & Specs

Tires Size 315/25ZR26

Dimensions, specs, and every size 315/25ZR26 tire currently in stock

Overall Height

32.2"

818 mm · calculated

Section Width

315 mm

12.4 inches

Sidewall Height

3.1"

78.8 mm · 25% profile

Wheel Diameter

26"

660.4 mm

315/25ZR26 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	25%	—
Sidewall height	3.1 in	78.8 mm
Overall diameter (calculated)	32.2 in	818 mm
Wheel / rim diameter	26 in	660.4 mm
Construction	Radial	—

What does 315/25ZR26 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

25% profile

The sidewall stands 25% of the section width, which is 78.8 mm on this size.

Construction (ZR)

Radial

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

Wheel diameter

26 in

Fits a wheel measuring 26 inches across.

315/25ZR26 Questions & Answers

Dimensions and fitment guidelines for size 315/25ZR26

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