How tall is a 255/70R16 tire?

A 255/70R16 has a nominal overall diameter of 30.06 inches (764 mm), calculated as the 16-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 255/70R16 tire fit?

A 255/70R16 fits a wheel of 16 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 255/70R16 mean?

255 is the section width in millimetres. 70 is the aspect ratio — the sidewall is 70% of the width, so 178.5 mm here. R marks the construction (radial). 16 is the wheel diameter in inches.

Size Dimensions & Specs

Tires Size 255/70R16

Dimensions, specs, and every size 255/70R16 tire currently in stock

Overall Height

30.06"

764 mm · calculated

Section Width

255 mm

10.04 inches

Sidewall Height

7.03"

178.5 mm · 70% profile

Wheel Diameter

16"

406.4 mm

255/70R16 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	70%	—
Sidewall height	7.03 in	178.5 mm
Overall diameter (calculated)	30.06 in	764 mm
Wheel / rim diameter	16 in	406.4 mm
Construction	Radial	—

What does 255/70R16 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

70% profile

The sidewall stands 70% of the section width, which is 178.5 mm on this size.

Construction (R)

Radial

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

Wheel diameter

16 in

Fits a wheel measuring 16 inches across.

255/70R16 Questions & Answers

Dimensions and fitment guidelines for size 255/70R16

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