What does 245/75R18 mean?
245/75R18 is a tire size with the following dimensions:
- 245 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.
- 75 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.
245/75R18 Tire Conversion
Dimensions | Inches | Millimeters |
Tire Diameter | 32.5 in | 824.7 mm |
Section Width | 9.6 in | 245 mm |
Rim Height | 18 in | 457 mm |
Sidewall Height | 7.2 in | 183.8 mm |
Circumference | 102 in | 2590.9 mm |
Revolutions | 621.2 revs/mile |
FAQ About 245/75R18 Tire
How tall is a 245/75R18 tire?
The height (or diameter) of a 245/75R18 tire is 32.5 inches
How wide is a 245/75R18 tire?
The width of a 245/75R18 tire is 245 mm, which is about 9.6 inches.
What size rim fits a 245/75R18 tire?
A 245/75R18 tire fits on a rim that is 18 inches in diameter.
What does the 75 in a 245/75R18 tire mean?
The 75 in a 245/75R18 tire refers to the aspect ratio, meaning the height of the tire's sidewall is 75% of its width.
Alternative Tire Sizes for 245/75R18
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 245/75R18:
Tire Size | Diameter | Rim |
---|---|---|
235/75R18 | 31.9″ (-1.8%) | 18 x n/a |
255/70R18 | 32.1″ (-1.2%) | 18 x 6.5-8.5 |
265/65R18 | 31.6″ (-2.8%) | 18 x 7.5-9.5 |
265/70R18 | 32.6″ (0.3%) | 18 x 7.0-9.0 |
275/65R18 | 32.1″ (-1.2%) | 18 x 7.5-9.5 |
275/70R18 | 33.2″ (2.2%) | 18 x 7.0-8.5 |
285/65R18 | 32.6″ (0.3%) | 18 x 8.0-10.0 |
295/65R18 | 33.1″ (1.8%) | 18 x 8.0-10.0 |
305/60R18 | 32.4″ (-0.3%) | 18 x 8.5-11.0 |
325/60R18 | 33.4″ (2.8%) | 18 x 8.5-10.0 |
375/50R18 | 32.8″ (0.9%) | 18 x n/a |