285/65R18 Sizing Info

Tire Size 285/65R18 in inches

Below are the most common tire sizing information in inches:

285/65R18 Height - How tall is a 285/65R18 tire in inches?

This tire size is 32.587 inches tall.

285/65R18 Width in inches - How wide is a 285/65R18 tire?

This tire size is 11.22 inches wide (tread width).

What's the Sidewall Size of a 285/65R18 Tire in Inches?

This tire size has 7.293 inch sidewalls.

Other Questions About the 285/65R18 Tire Size

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

What size rims fit a 285/65R18 tire?

This tire will fit onto 18 inch wheels.

What is the next size up from 285/65R18?

The tire sizes below are the next sizes up from 285/65R18. The table shows the increase in diameter and width for each option.

Tire Size	Diameter (in)	Width (in)	Diameter Change	Width Change
33x12.5R18	33.000	12.500	+ 0.413 in	+ 1.28 in
295/65R18	33.098	11.614	+ 0.512 in	+ 0.394 in
325/60R18	33.354	12.795	+ 0.768 in	+ 1.575 in
305/65R18	33.610	12.008	+ 1.024 in	+ 0.787 in
34x12.5R18	34.000	12.500	+ 1.413 in	+ 1.28 in

What is the next size down from 285/65R18?

The tire sizes below are the next sizes down from 285/65R18. The table shows the decrease in diameter and width for each option.

Tire Size	Diameter (in)	Width (in)	Diameter Change	Width Change
32.5x7R18	32.500	7.000	- 0.087 in	- 4.22 in
32.5x8R18	32.500	8.000	- 0.087 in	- 3.22 in
275/65R18	32.075	10.827	- 0.512 in	- 0.394 in
255/70R18	32.055	10.039	- 0.531 in	- 1.181 in
32x6.5R18	32.000	6.500	- 0.587 in	- 4.72 in

What does the 285 mean in tire size?

This represents the treadwidth of the tire. The tread is 285mm wide, or 32.587 inches wide.

What does the 65 mean in tire size?

This represents the sidewall height of the tire, as a percentage of the width. The sidewall height is 65% of 285mm, or 185.25mm, which is 7.293 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 an 18 inch wheel.