What does 275/65R18 mean?
275/65R18 is a tire size with the following dimensions:
- 275 is the width of the tire in millimeters. This number also indicates the appropriate width of the rim on which the tire should be mounted.
- 65 is the aspect ratio, which is the ratio of the tire's height to its width. This affects the tire's handling and ride comfort
- R indicates the tire's construction type, meaning it has a radial construction. This provides stability and precision to the tire.
- 18 is the diameter of the wheel in inches, on which the tire is to be mounted.
275/65R18 Tire Conversion
Dimensions | Inches | Millimeters |
Tire Diameter | 32.1 in | 814.7 mm |
Section Width | 10.8 in | 275 mm |
Rim Height | 18 in | 457 mm |
Sidewall Height | 7 in | 178.8 mm |
Circumference | 100.8 in | 2559.5 mm |
Revolutions | 628.8 revs/mile |
FAQ About 275/65R18 Tire
How tall is a 275/65R18 tire?
The height (or diameter) of a 275/65R18 tire is 32.1 inches
How wide is a 275/65R18 tire?
The width of a 275/65R18 tire is 275 mm, which is about 10.8 inches.
What size rim fits a 275/65R18 tire?
A 275/65R18 tire fits on a rim that is 18 inches in diameter.
What does the 65 in a 275/65R18 tire mean?
The 65 in a 275/65R18 tire refers to the aspect ratio, meaning the height of the tire's sidewall is 65% of its width.
Alternative Tire Sizes for 275/65R18
Typically, it's recommended to choose a tire with a diameter (height) within 3% of the original equipment manufacturer (OEM) tire size.
However, keep in mind that this is a general guideline and not an absolute rule.
Here are some tire sizes that are compatible with the 275/65R18:
Tire Size | Diameter | Rim |
---|---|---|
255/70R18 | 32.1″ (Equal) | 18 x 6.5-8.5 |
225/75R18 | 31.3″ (-2.5%) | 18 x n/a |
235/75R18 | 31.9″ (-0.6%) | 18 x n/a |
245/70R18 | 31.5″ (-1.9%) | 18 x n/a |
245/75R18 | 32.5″ (1.2%) | 18 x 6.5-8.0 |
265/65R18 | 31.6″ (-1.6%) | 18 x 7.5-9.5 |
265/70R18 | 32.6″ (1.6%) | 18 x 7.0-9.0 |
285/60R18 | 31.5″ (-1.9%) | 18 x 8.0-10.0 |
285/65R18 | 32.6″ (1.6%) | 18 x 8.0-10.0 |
305/60R18 | 32.4″ (0.9%) | 18 x 8.5-11.0 |
375/50R18 | 32.8″ (2.2%) | 18 x n/a |