How tall is a 255/30R26 tire?

A 255/30R26 has a nominal overall diameter of 32.02 inches (813 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 255/30R26 tire fit?

A 255/30R26 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 255/30R26 mean?

255 is the section width in millimetres. 30 is the aspect ratio — the sidewall is 30% of the width, so 76.5 mm here. R marks the construction (radial). 26 is the wheel diameter in inches.

Size Dimensions & Specs

Tires Size 255/30R26

Dimensions, specs, and every size 255/30R26 tire currently in stock

Overall Height

32.02"

813 mm · calculated

Section Width

255 mm

10.04 inches

Sidewall Height

3.01"

76.5 mm · 30% profile

Wheel Diameter

26"

660.4 mm

255/30R26 Specifications

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

Specification	Imperial	Metric
Section width	10.04 in	255 mm
Aspect ratio	30%	—
Sidewall height	3.01 in	76.5 mm
Overall diameter (calculated)	32.02 in	813 mm
Wheel / rim diameter	26 in	660.4 mm
Construction	Radial	—

What does 255/30R26 mean?

Reading the code on your sidewall

Section width

255 mm

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

Aspect ratio

30% profile

The sidewall stands 30% of the section width, which is 76.5 mm on this size.

Construction (R)

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.

255/30R26 Questions & Answers

Dimensions and fitment guidelines for size 255/30R26

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