How tall is a 235/55ZR17 tire?

A 235/55ZR17 has a nominal overall diameter of 27.18 inches (690 mm), calculated as the 17-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 235/55ZR17 tire fit?

A 235/55ZR17 fits a wheel of 17 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 235/55ZR17 mean?

235 is the section width in millimetres. 55 is the aspect ratio — the sidewall is 55% of the width, so 129.3 mm here. ZR marks the construction (radial). 17 is the wheel diameter in inches.

Size Dimensions & Specs

Tires Size 235/55ZR17

Dimensions, specs, and every size 235/55ZR17 tire currently in stock

Overall Height

27.18"

690 mm · calculated

Section Width

235 mm

9.25 inches

Sidewall Height

5.09"

129.3 mm · 55% profile

Wheel Diameter

17"

431.8 mm

235/55ZR17 Specifications

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

Specification	Imperial	Metric
Section width	9.25 in	235 mm
Aspect ratio	55%	—
Sidewall height	5.09 in	129.3 mm
Overall diameter (calculated)	27.18 in	690 mm
Wheel / rim diameter	17 in	431.8 mm
Construction	Radial	—

What does 235/55ZR17 mean?

Reading the code on your sidewall

Section width

235 mm

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

Aspect ratio

55% profile

The sidewall stands 55% of the section width, which is 129.3 mm on this size.

Construction (ZR)

Radial

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

Wheel diameter

17 in

Fits a wheel measuring 17 inches across.

235/55ZR17 Questions & Answers

Dimensions and fitment guidelines for size 235/55ZR17

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