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215/40R18 Sizing Info

215/40R18
Diameter: 24.77 inches
Sidewall Height: 3.39 inches
Radius: 12.39 inches
Rim Diameter: 18.00 inches
Section Width: 8.46 inches
Circumference: 77.82 inches
Rev/Mile: 814.16
Rim Width Range: 6.5″, 7″, 7.5″, 8″, 8.5″
List of 215/40R18 Sized Tires

All of the tires listed below will fit the size you are looking for. 

General G-MAX RS
  • Rating: 4.40 / 5
  • Summer
Get Free Shipping!
Kumho Ecsta PS31
  • Rating: 4.20 / 5
  • Summer
Get Free Shipping!
BFGoodrich g-Force Sport COMP-2
  • Rating: 4.16 / 5
  • Summer
Get Free Shipping!
Bridgestone Potenza RE980AS
  • Rating: 4.00 / 5
  • All-Season
Get Free Shipping!
Bridgestone Potenza RE-71R
  • Rating: 4.00 / 5
  • Summer
Get Free Shipping!

Tire Size 215/40R18 in inches

Below are the most common tire sizing information in inches:

215/40R18 Height - How tall is a 215/40R18 tire in inches?

This tire size is 24.772 inches tall.

215/40R18 Width in inches - How wide is a 215/40R18 tire?

This tire size is 8.465 inches wide (tread width).

What's the Sidewall Size of a 215/40R18 Tire in Inches?

This tire size has 3.386 inch sidewalls.

Other Questions About the 215/40R18 Tire Size

Here's some other common questions asked about this tire size:

What size rims fit a 215/40R18 tire?

This tire will fit onto 18 inch wheels.

What is the next size up from 215/40R18?

The tire sizes below are the next sizes up from 215/40R18. The table shows the increase in diameter and width for each option.

Tire SizeDiameter (in)Width (in)Diameter ChangeWidth Change
295/30R1824.96911.614+ 0.197 in+ 3.15 in
255/35R1825.02810.039+ 0.256 in+ 1.575 in
225/40R1825.0878.858+ 0.315 in+ 0.394 in
305/30R1825.20512.008+ 0.433 in+ 3.543 in
265/35R1825.30310.433+ 0.531 in+ 1.969 in

What is the next size down from 215/40R18?

The tire sizes below are the next sizes down from 215/40R18. The table shows the decrease in diameter and width for each option.

Tire SizeDiameter (in)Width (in)Diameter ChangeWidth Change
205/40R1824.4578.071- 0.315 in- 0.394 in
205/35R1823.6508.071- 1.122 in- 0.394 in
195/35R1823.3747.677- 1.398 in- 0.787 in

What does the 215 mean in tire size?

This represents the treadwidth of the tire. The tread is 215mm wide, or 24.772 inches wide.

What does the 40 mean in tire size?

This represents the sidewall height of the tire, as a percentage of the width. The sidewall height is 40% of 215mm, or 86mm, which is 3.386 inches.

What does the 18 mean in tire size?

This represents the wheel diameter that this tire size fits on. This tire size is meant to fit a 18 inch wheel.



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