How tall is a 25x8.00R12 tire?

A 25x8.00R12 has a nominal overall diameter of 25 inches (635 mm), calculated as the 12-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 25x8.00R12 tire fit?

A 25x8.00R12 fits a wheel of 12 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 25x8.00R12 mean?

This is a flotation size, quoted in inches rather than millimetres. 25 is the overall diameter, 8 is the section width, R marks the construction (radial), and 12 is the wheel diameter.

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Size Dimensions & Specs

Tires Size 25x8.00R12

Dimensions, specs, and every size 25x8.00R12 tire currently in stock

Overall Height

25"

635 mm · calculated

Section Width

stated in inches

Sidewall Height

6.5"

165 mm

Wheel Diameter

12"

304.8 mm

25x8.00R12 Specifications

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

Specification	Imperial	Metric
Section width	8 in	—
Sidewall height	6.5 in	165 mm
Overall diameter (calculated)	25 in	635 mm
Wheel / rim diameter	12 in	304.8 mm
Construction	Radial	—

What does 25x8.00R12 mean?

Reading the code on your sidewall

Overall diameter

25 in

Flotation sizes lead with the tire's full height in inches rather than a width in millimetres.

Section width

8 in

The width across the widest point of the tire, also quoted in inches on this style of size.

Construction (R)

Radial

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

Wheel diameter

12 in

Fits a wheel measuring 12 inches across.

25x8.00R12 Questions & Answers

Dimensions and fitment guidelines for size 25x8.00R12

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