How tall is a LT245/75R17 tire?

A LT245/75R17 has a nominal overall diameter of 31.48 inches (800 mm), calculated as the 17-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 LT245/75R17 tire fit?

A LT245/75R17 fits a wheel of 17 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 LT245/75R17 mean?

245 is the section width in millimetres. 75 is the aspect ratio — the sidewall is 75% of the width, so 183.8 mm here. R marks the construction (radial). 17 is the wheel diameter in inches.

Size Dimensions & Specs

Tires Size LT245/75R17

Dimensions, specs, and every size LT245/75R17 tire currently in stock

Overall Height

31.48"

800 mm · calculated

Section Width

245 mm

9.65 inches

Sidewall Height

7.24"

183.8 mm · 75% profile

Wheel Diameter

17"

431.8 mm

LT245/75R17 Specifications

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

Specification	Imperial	Metric
Section width	9.65 in	245 mm
Aspect ratio	75%	—
Sidewall height	7.24 in	183.8 mm
Overall diameter (calculated)	31.48 in	800 mm
Wheel / rim diameter	17 in	431.8 mm
Construction	Radial	—
Service type	Light truck	—

What does LT245/75R17 mean?

Reading the code on your sidewall

Section width

245 mm

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

Aspect ratio

75% profile

The sidewall stands 75% of the section width, which is 183.8 mm on this size.

Construction (R)

Radial

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

Wheel diameter

17 in

Fits a wheel measuring 17 inches across.

LT245/75R17 Questions & Answers

Dimensions and fitment guidelines for size LT245/75R17

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