Home › 17" tire sizes › 255/75R17
255/75R17 tire size in inches
255/75R17 is 32.06" tall and 10.04" wide, and fits a 17" rim. In flotation (inch) sizing that is roughly 32.1x10.0R17.
255/75R17 dimensions
| Measurement | Inches | Metric |
|---|---|---|
| Overall diameter (height) | 32.06" | 814 mm |
| Section width | 10.04" | 255 mm |
| Sidewall height | 7.53" | 191.2 mm |
| Rim diameter | 17" | 431.8 mm |
| Circumference | 100.7" | 2558 mm |
| Revolutions per mile | 629 | |
| Aspect ratio | 75% (sidewall is 75% of the width) | |
Drawn to scale
Among the 124 sizes for 17" wheels on this site, 255/75R17 is #78 by height (shortest: 205/40R17, tallest: 385/70R17).
What people compare 255/75R17 with
Real comparisons drivers search for, worked out against 255/75R17:
| Compared size | Height | Width | Sidewall | Speedo at true 60 |
|---|---|---|---|---|
| 265/70R17 | -0.45" (-1.4%) | +0.39" | -0.23" | 60.9 mph |
| 285/70R17 | +0.65" (+2.03%) | +1.18" | +0.32" | 58.8 mph |
| 275/70R17 | +0.10" (+0.31%) | +0.79" | +0.05" | 59.8 mph |
| 255/80R17 | +1.00" (+3.12%) | 0.00" | +0.50" | 58.2 mph |
| 245/75R17 | -0.59" (-1.84%) | -0.39" | -0.30" | 61.1 mph |
| 255/70R17 | -1.00" (-3.12%) | 0.00" | -0.50" | 61.9 mph |
| 265/65R17 | -1.50" (-4.68%) | +0.39" | -0.75" | 62.9 mph |
| 285/75R17 | +1.77" (+5.52%) | +1.18" | +0.89" | 56.9 mph |
How the 255/75R17 numbers are worked out
The size code reads as 255 mm section width, 75% aspect ratio, R for radial construction and 17-inch wheel.
- Sidewall = 255 × 75% = 191.2 mm = 7.53"
- Diameter = 17" + 2 × 7.53" = 32.06"
- Circumference = π × 32.06" = 100.7"
- Revs per mile = 63,360" ÷ 100.7" = 629
Sizes that can replace 255/75R17 on a 17" wheel
Within 3% of 32.06". Last column: speedometer reading at a true 60 mph.
| Size | Diameter | Width | Difference | Speedo at true 60 mph |
|---|---|---|---|---|
| 295/65R17 | 32.10" | 11.61" | +0.12% | 59.9 mph |
| 275/70R17 | 32.16" | 10.83" | +0.31% | 59.8 mph |
| 270/70R17 | 31.88" | 10.63" | -0.56% | 60.3 mph |
| 315/60R17 | 31.88" | 12.40" | -0.56% | 60.3 mph |
| 235/80R17 | 31.80" | 9.25" | -0.81% | 60.5 mph |
| 280/70R17 | 32.43" | 11.02" | +1.15% | 59.3 mph |
| 245/80R17 | 32.43" | 9.65" | +1.15% | 59.3 mph |
| 265/70R17 | 31.61" | 10.43" | -1.4% | 60.9 mph |
| 285/65R17 | 31.59" | 11.22" | -1.47% | 60.9 mph |
| 305/65R17 | 32.61" | 12.01" | +1.72% | 59 mph |
| 245/75R17 | 31.47" | 9.65" | -1.84% | 61.1 mph |
| 265/75R17 | 32.65" | 10.43" | +1.84% | 58.9 mph |
One size wider or narrower
Same height on a different wheel size
- 255/85R15 15" (+0.03%)
- 285/75R15 15" (-0.72%)
- 305/70R15 15" (-0.78%)
- 315/70R15 15" (+0.94%)
- 295/75R15 15" (+1.12%)
- 265/80R15 15" (-1.15%)
- 255/80R16 16" (0%)
- 315/65R16 16" (+0.19%)
- 270/75R16 16" (-0.37%)
- 275/75R16 16" (+0.56%)
Questions about 255/75R17
How tall is a 255/75R17 tire in inches?
A 255/75R17 tire is 32.06 inches (814 mm) tall: the 17-inch rim plus two sidewalls of 7.53 inches each.
Is 255/75R17 a 32 inch tire?
Yes. At 32.06 inches tall it is commonly called a 32-inch tire.
How many revolutions per mile does a 255/75R17 make?
About 629 revolutions per mile, based on a calculated circumference of 100.7 inches.
What size can replace 255/75R17?
295/65R17 is the closest match on a 17" rim (+0.12% height). Check load index, speed rating and clearance first.
Compare 255/75R17 against any other size with the tire size calculator.