How tall is a 285/60R20 tire?

A 285/60R20 has a nominal overall diameter of 33.46 inches (850 mm), calculated as the 20-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 285/60R20 tire fit?

A 285/60R20 fits a wheel of 20 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 285/60R20 mean?

285 is the section width in millimetres. 60 is the aspect ratio — the sidewall is 60% of the width, so 171 mm here. R marks the construction (radial). 20 is the wheel diameter in inches.

Size Dimensions & Specs

Tires Size 285/60R20

Dimensions, specs, and every size 285/60R20 tire currently in stock

Overall Height

33.46"

850 mm · calculated

Section Width

285 mm

11.22 inches

Sidewall Height

6.73"

171 mm · 60% profile

Wheel Diameter

20"

508.0 mm

285/60R20 Specifications

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

Specification	Imperial	Metric
Section width	11.22 in	285 mm
Aspect ratio	60%	—
Sidewall height	6.73 in	171 mm
Overall diameter (calculated)	33.46 in	850 mm
Wheel / rim diameter	20 in	508.0 mm
Construction	Radial	—

What does 285/60R20 mean?

Reading the code on your sidewall

Section width

285 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 171 mm on this size.

Construction (R)

Radial

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

Wheel diameter

20 in

Fits a wheel measuring 20 inches across.

285/60R20 Questions & Answers

Dimensions and fitment guidelines for size 285/60R20

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