255/50R20 Tire Size: Dimensions & Inches
255/50R20 is approximately 30.04 inches tall and 10.04 inches wide, with a calculated sidewall height of 5.02 inches.
255/50R20 Dimensions
What Does 255/50R20 Mean?
The tire-size code describes the tire's nominal width, sidewall proportion, construction and wheel diameter:
255/50R20 in Inches
A 255/50R20 tire has a nominal width of 255 mm (about 10.04 inches). Its calculated sidewall is about 5.02 inches, producing an overall diameter of about 30.04 inches.
| Tire size | 255/50R20 |
|---|---|
| Width | 255 mm / 10.04 in |
| Aspect ratio | 50% |
| Overall diameter | 30.04 in |
| Sidewall height | 5.02 in |
| Wheel diameter | 20 in |
| Circumference | 94.37 in |
| Approx. revs per mile | 671 |
Is 255/50R20 a 30-Inch Tire?
Yes, approximately. A 255/50R20 tire has a calculated overall diameter of about 30.04 inches, so it is commonly grouped with 30-inch-class tires. Actual mounted diameter can vary slightly by tire manufacturer, tread design, approved rim width, load and inflation pressure.
Compare 255/50R20 With Another Tire Size
Check diameter, width, sidewall and speedometer differences before considering a different size.
255/50R20 FAQ
How tall is a 255/50R20 tire?
The calculated overall diameter is about 30.04 inches.
Is 255/50R20 a 30-inch tire?
Approximately. Its calculated diameter is about 30.04 inches, so it is commonly grouped with 30-inch-class tires. Actual mounted dimensions vary by tire model and manufacturer.
How wide is a 255/50R20 tire?
The nominal section width is 255 mm, which is about 10.04 inches.
What wheel diameter does 255/50R20 use?
This size is designed around a 20-inch wheel diameter. Wheel width and full vehicle fitment still need to be checked separately.