155/80R15 In Inches – Tire Size & Wheel Fitment Guide

What size tire is 155/80R15 in Inches?

The 155/80R15 tire has an overall diameter of 24.8 inches, a section width of 6.1 inches, and can be mounted on 15 x 4.0-5.0 inches rim. The equivalent tire size in the high flotation system is 24.8x6.1R15.

	Inches	Millimeters
Tire Diameter	24.8	629
Section Width	6.1	155
Rim Height	15	381
Sidewall Height	4.9	124
Circumference	77.8	1976.1

6.1"

24.8"

77.8"

15"

4.9"

814.4 Revs/Mile

To help you understand, we'll break down each part of the 155/80R15 tire size to know what these numbers represent & how they may affect your tire's performance:

How wide is a 155/80R15 tire?

The 155/80R15 tire has a width of 6.1 inches (155 mm). This is the measurement at its thickest point, the distance between the outer sidewall and the inner sidewall’s widest point, also called as tread width or section width.

How tall is a 155/80R15 tire?

The 155/80R15 tire has a height of 24.8 inches (629 mm). This is the measurement from the bottom to the highest point at the top of a tire through its exact center when inflated and unloaded.

155/80R15 sidewall height

The 155/80R15 has a sidewall height of 4.9 inches (124 mm). It’s measured from the rim to the outer edge of the tire's tread, expressed as a percentage of tire width.

What size rim do you need for 155/80R15 tire?

You can mount the 155/80R15 tire on a rim with a height of 15 inches and a width ranging from 4.0-5.0 inches. (Based on recommendations of The Tire and Rim Association (TRA))

Putting very narrow tires on wide rims or vice versa can result in reduced performance of the tire.

155/80R15 circumference

The 155/80R15 tire has a circumference of 77.8 inches (1976.1 mm), This is the measurement of the distance the tire travels in one revolution.

The tire circumference is important for your vehicle's overall performance, affecting its speedometer acceleration, accuracy and fuel efficiency.

155/80R15 Revolutions

The 155/80R15 performs 814.4 revs/mile. Revolutions per mile indicate the number of times a tire rotates while it covers the distance of one mile.

Replacement Tire Sizes for 155/80R15

As a rule, you can replace the tire within a 3% difference in tire diameter (height) of the OEM tire size. Here is a list of compatible tire sizes for 155/80R15: