275/65R18 Tire Size: Dimensions & Inches
275/65R18 is approximately 32.08 inches tall and 10.83 inches wide, with a calculated sidewall height of 7.04 inches.
275/65R18 Dimensions
What Does 275/65R18 Mean?
The tire-size code describes the tire's nominal width, sidewall proportion, construction and wheel diameter:
275/65R18 in Inches
A 275/65R18 tire has a nominal width of 275 mm (about 10.83 inches). Its calculated sidewall is about 7.04 inches, producing an overall diameter of about 32.08 inches.
| Tire size | 275/65R18 |
|---|---|
| Width | 275 mm / 10.83 in |
| Aspect ratio | 65% |
| Overall diameter | 32.08 in |
| Sidewall height | 7.04 in |
| Wheel diameter | 18 in |
| Circumference | 100.77 in |
| Approx. revs per mile | 629 |
Is 275/65R18 a 32-Inch Tire?
Yes, approximately. A 275/65R18 tire has a calculated overall diameter of about 32.08 inches, so it is commonly grouped with 32-inch-class tires. Actual mounted diameter can vary slightly by tire manufacturer, tread design, approved rim width, load and inflation pressure.
Compare 275/65R18 With Another Tire Size
Check diameter, width, sidewall and speedometer differences before considering a different size.
275/65R18 FAQ
How tall is a 275/65R18 tire?
The calculated overall diameter is about 32.08 inches.
Is 275/65R18 a 32-inch tire?
Approximately. Its calculated diameter is about 32.08 inches, so it is commonly grouped with 32-inch-class tires. Actual mounted dimensions vary by tire model and manufacturer.
How wide is a 275/65R18 tire?
The nominal section width is 275 mm, which is about 10.83 inches.
What wheel diameter does 275/65R18 use?
This size is designed around a 18-inch wheel diameter. Wheel width and full vehicle fitment still need to be checked separately.