Home › 17" tire sizes › 255/65R17
255/65R17 tire size in inches
255/65R17 is 30.05" tall and 10.04" wide, and fits a 17" rim. In flotation (inch) sizing that is roughly 30.1x10.0R17.
255/65R17 dimensions
| Measurement | Inches | Metric |
|---|---|---|
| Overall diameter (height) | 30.05" | 763 mm |
| Section width | 10.04" | 255 mm |
| Sidewall height | 6.53" | 165.8 mm |
| Rim diameter | 17" | 431.8 mm |
| Circumference | 94.4" | 2398 mm |
| Revolutions per mile | 671 | |
| Aspect ratio | 65% (sidewall is 65% of the width) | |
Drawn to scale
Among the 124 sizes for 17" wheels on this site, 255/65R17 is #58 by height (shortest: 205/40R17, tallest: 385/70R17).
What people compare 255/65R17 with
Real comparisons drivers search for, worked out against 255/65R17:
| Compared size | Height | Width | Sidewall | Speedo at true 60 |
|---|---|---|---|---|
| 265/70R17 | +1.56" (+5.19%) | +0.39" | +0.77" | 57 mph |
| 265/65R17 | +0.51" (+1.7%) | +0.39" | +0.25" | 59 mph |
| 245/65R17 | -0.51" (-1.7%) | -0.39" | -0.26" | 61 mph |
| 255/70R17 | +1.01" (+3.36%) | 0.00" | +0.50" | 58 mph |
| 245/70R17 | +0.45" (+1.5%) | -0.39" | +0.22" | 59.1 mph |
How the 255/65R17 numbers are worked out
The size code reads as 255 mm section width, 65% aspect ratio, R for radial construction and 17-inch wheel.
- Sidewall = 255 × 65% = 165.8 mm = 6.53"
- Diameter = 17" + 2 × 6.53" = 30.05"
- Circumference = π × 30.05" = 94.4"
- Revs per mile = 63,360" ÷ 94.4" = 671
Sizes that can replace 255/65R17 on a 17" wheel
Within 3% of 30.05". Last column: speedometer reading at a true 60 mph.
| Size | Diameter | Width | Difference | Speedo at true 60 mph |
|---|---|---|---|---|
| 275/60R17 | 29.99" | 10.83" | -0.2% | 60.1 mph |
| 235/70R17 | 29.95" | 9.25" | -0.33% | 60.2 mph |
| 305/55R17 | 30.21" | 12.01" | +0.53% | 59.7 mph |
| 225/75R17 | 30.29" | 8.86" | +0.8% | 59.5 mph |
| 295/55R17 | 29.78" | 11.61" | -0.9% | 60.5 mph |
| 215/75R17 | 29.70" | 8.46" | -1.16% | 60.7 mph |
| 285/60R17 | 30.46" | 11.22" | +1.36% | 59.2 mph |
| 245/70R17 | 30.50" | 9.65" | +1.5% | 59.1 mph |
| 265/65R17 | 30.56" | 10.43" | +1.7% | 59 mph |
| 245/65R17 | 29.54" | 9.65" | -1.7% | 61 mph |
| 265/60R17 | 29.52" | 10.43" | -1.76% | 61.1 mph |
| 315/55R17 | 30.64" | 12.40" | +1.96% | 58.8 mph |
One size wider or narrower
Same height on a different wheel size
- 255/80R14 14" (+0.03%)
- 255/75R15 15" (+0.03%)
- 295/65R15 15" (+0.17%)
- 275/70R15 15" (+0.37%)
- 315/60R15 15" (-0.57%)
- 235/80R15 15" (-0.83%)
- 325/60R15 15" (+1%)
- 265/70R15 15" (-1.46%)
- 285/65R15 15" (-1.53%)
- 245/75R15 15" (-1.93%)
Questions about 255/65R17
How tall is a 255/65R17 tire in inches?
A 255/65R17 tire is 30.05 inches (763 mm) tall: the 17-inch rim plus two sidewalls of 6.53 inches each.
Is 255/65R17 a 30 inch tire?
Yes. At 30.05 inches tall it is commonly called a 30-inch tire.
How many revolutions per mile does a 255/65R17 make?
About 671 revolutions per mile, based on a calculated circumference of 94.4 inches.
What size can replace 255/65R17?
275/60R17 is the closest match on a 17" rim (-0.2% height). Check load index, speed rating and clearance first.
Compare 255/65R17 against any other size with the tire size calculator.