How tall is a ST175/85D14.5 tire?

A ST175/85D14.5 has a nominal overall diameter of 26.22 inches (666 mm), calculated as the 14.5-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 ST175/85D14.5 tire fit?

A ST175/85D14.5 fits a wheel of 14.5 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 ST175/85D14.5 mean?

175 is the section width in millimetres. 85 is the aspect ratio — the sidewall is 85% of the width, so 148.8 mm here. D marks the construction (bias-ply (diagonal)). 14.5 is the wheel diameter in inches.

Is ST175/85D14.5 a radial tire?

No. The "D" in ST175/85D14.5 marks bias-ply (diagonal) construction, not radial. Radial and bias-ply tires should not be mixed on the same axle.

Size Dimensions & Specs

Tires Size ST175/85D14.5

Dimensions, specs, and every size ST175/85D14.5 tire currently in stock

Overall Height

26.22"

666 mm · calculated

Section Width

175 mm

6.89 inches

Sidewall Height

5.86"

148.8 mm · 85% profile

Wheel Diameter

14.5"

368.3 mm

ST175/85D14.5 Specifications

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

Specification	Imperial	Metric
Section width	6.89 in	175 mm
Aspect ratio	85%	—
Sidewall height	5.86 in	148.8 mm
Overall diameter (calculated)	26.22 in	666 mm
Wheel / rim diameter	14.5 in	368.3 mm
Construction	Bias-ply (diagonal)	—
Service type	Special trailer	—

What does ST175/85D14.5 mean?

Reading the code on your sidewall

Section width

175 mm

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

Aspect ratio

85% profile

The sidewall stands 85% of the section width, which is 148.8 mm on this size.

Construction (D)

Bias-ply (diagonal)

The body plies run diagonally rather than radially. Do not mix construction types on one axle.

Wheel diameter

14.5 in

Fits a wheel measuring 14.5 inches across.

ST175/85D14.5 Questions & Answers

Dimensions and fitment guidelines for size ST175/85D14.5

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