How tall is a 320/90R50 tire?

A 320/90R50 has a nominal overall diameter of 72.68 inches (1846 mm), calculated as the 50-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 320/90R50 tire fit?

A 320/90R50 fits a wheel of 50 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 320/90R50 mean?

320 is the section width in millimetres. 90 is the aspect ratio — the sidewall is 90% of the width, so 288 mm here. R marks the construction (radial). 50 is the wheel diameter in inches.

Size Dimensions & Specs

Tires Size 320/90R50

Dimensions, specs, and every size 320/90R50 tire currently in stock

Overall Height

72.68"

1846 mm · calculated

Section Width

320 mm

12.6 inches

Sidewall Height

11.34"

288 mm · 90% profile

Wheel Diameter

50"

1270.0 mm

320/90R50 Specifications

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

Specification	Imperial	Metric
Section width	12.6 in	320 mm
Aspect ratio	90%	—
Sidewall height	11.34 in	288 mm
Overall diameter (calculated)	72.68 in	1846 mm
Wheel / rim diameter	50 in	1270.0 mm
Construction	Radial	—

What does 320/90R50 mean?

Reading the code on your sidewall

Section width

320 mm

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

Aspect ratio

90% profile

The sidewall stands 90% of the section width, which is 288 mm on this size.

Construction (R)

Radial

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

Wheel diameter

50 in

Fits a wheel measuring 50 inches across.

320/90R50 Questions & Answers

Dimensions and fitment guidelines for size 320/90R50

Tires Size 320/90R50

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Filter & search

320/90R50 Specifications

What does 320/90R50 mean?

320 mm

90% profile

Radial

50 in

320/90R50 Questions & Answers

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