How tall is a 155/55R14 tire?

A 155/55R14 has a nominal overall diameter of 20.72 inches (526 mm), calculated as the 14-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 155/55R14 tire fit?

A 155/55R14 fits a wheel of 14 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 155/55R14 mean?

155 is the section width in millimetres. 55 is the aspect ratio — the sidewall is 55% of the width, so 85.3 mm here. R marks the construction (radial). 14 is the wheel diameter in inches.

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Size Dimensions & Specs

Tires Size 155/55R14

Dimensions, specs, and every size 155/55R14 tire currently in stock

Overall Height

20.72"

526 mm · calculated

Section Width

155 mm

6.1 inches

Sidewall Height

3.36"

85.3 mm · 55% profile

Wheel Diameter

14"

355.6 mm

155/55R14 Specifications

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

Specification	Imperial	Metric
Section width	6.1 in	155 mm
Aspect ratio	55%	—
Sidewall height	3.36 in	85.3 mm
Overall diameter (calculated)	20.72 in	526 mm
Wheel / rim diameter	14 in	355.6 mm
Construction	Radial	—

What does 155/55R14 mean?

Reading the code on your sidewall

Section width

155 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 85.3 mm on this size.

Construction (R)

Radial

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

Wheel diameter

14 in

Fits a wheel measuring 14 inches across.

155/55R14 Questions & Answers

Dimensions and fitment guidelines for size 155/55R14

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Tires Size 155/55R14

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155/55R14 Specifications

What does 155/55R14 mean?

155 mm

55% profile

Radial

14 in

155/55R14 Questions & Answers

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