315/70R17 In Inches – Tire Size & Wheel Fitment Guide

What size tire is 315/70R17 in Inches?

The 315/70R17 tire has an overall diameter of 34.4 inches, a section width of 12.4 inches, and can be mounted on 17 x 8.0-10.5 inches rim. The equivalent tire size in the high flotation system is 34.4x12.4R17.

	Inches	Millimeters
Tire Diameter	34.4	872.8
Section Width	12.4	315
Rim Height	17	432
Sidewall Height	8.7	220.5
Circumference	108	2742

12.4"

34.4"

108"

17"

8.7"

586.9 Revs/Mile

To help you understand, we'll break down each part of the 315/70R17 tire size to know what these numbers represent & how they may affect your tire's performance:

How wide is a 315/70R17 tire?

The 315/70R17 tire has a width of 12.4 inches (315 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 315/70R17 tire?

The 315/70R17 tire has a height of 34.4 inches (872.8 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.

315/70R17 sidewall height

The 315/70R17 has a sidewall height of 8.7 inches (220.5 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 315/70R17 tire?

You can mount the 315/70R17 tire on a rim with a height of 17 inches and a width ranging from 8.0-10.5 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.

315/70R17 circumference

The 315/70R17 tire has a circumference of 108 inches (2742 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.

315/70R17 Revolutions

The 315/70R17 performs 586.9 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 315/70R17

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 315/70R17: