How tall is a 225/60R18 tire?

A 225/60R18 has a nominal overall diameter of 28.62 inches (727 mm), calculated as the 18-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 225/60R18 tire fit?

A 225/60R18 fits a wheel of 18 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 225/60R18 mean?

225 is the section width in millimetres. 60 is the aspect ratio — the sidewall is 60% of the width, so 135 mm here. R marks the construction (radial). 18 is the wheel diameter in inches.

Size Dimensions & Specs

Tires Size 225/60R18

Dimensions, specs, and every size 225/60R18 tire currently in stock

Overall Height

28.62"

727 mm · calculated

Section Width

225 mm

8.86 inches

Sidewall Height

5.31"

135 mm · 60% profile

Wheel Diameter

18"

457.2 mm

225/60R18 Specifications

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

Specification	Imperial	Metric
Section width	8.86 in	225 mm
Aspect ratio	60%	—
Sidewall height	5.31 in	135 mm
Overall diameter (calculated)	28.62 in	727 mm
Wheel / rim diameter	18 in	457.2 mm
Construction	Radial	—

What does 225/60R18 mean?

Reading the code on your sidewall

Section width

225 mm

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

Aspect ratio

60% profile

The sidewall stands 60% of the section width, which is 135 mm on this size.

Construction (R)

Radial

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

Wheel diameter

18 in

Fits a wheel measuring 18 inches across.

225/60R18 Questions & Answers

Dimensions and fitment guidelines for size 225/60R18

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