215/40R17 In Inches – Tire Size & Wheel Fitment Guide

What size tire is 215/40R17 in Inches?

The 215/40R17 tire has an overall diameter of 23.8 inches, a section width of 8.5 inches, and can be mounted on 17 x 7.0-8.5 inches rim. The equivalent tire size in the high flotation system is 23.8x8.5R17.

	Inches	Millimeters
Tire Diameter	23.8	603.8
Section Width	8.5	215
Rim Height	17	432
Sidewall Height	3.4	86
Circumference	74.7	1896.9

8.5"

23.8"

74.7"

17"

3.4"

848.4 Revs/Mile

To help you understand, we'll break down each part of the 215/40R17 tire size to know what these numbers represent & how they may affect your tire's performance:

How wide is a 215/40R17 tire?

The 215/40R17 tire has a width of 8.5 inches (215 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 215/40R17 tire?

The 215/40R17 tire has a height of 23.8 inches (603.8 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.

215/40R17 sidewall height

The 215/40R17 has a sidewall height of 3.4 inches (86 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 215/40R17 tire?

You can mount the 215/40R17 tire on a rim with a height of 17 inches and a width ranging from 7.0-8.5 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.

215/40R17 circumference

The 215/40R17 tire has a circumference of 74.7 inches (1896.9 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.

215/40R17 Revolutions

The 215/40R17 performs 848.4 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 215/40R17

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 215/40R17: