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235/80R17 tire size in inches
235/80R17 is 31.80" tall and 9.25" wide, and fits a 17" rim. In flotation (inch) sizing that is roughly 31.8x9.3R17.
235/80R17 dimensions
| Measurement | Inches | Metric |
|---|---|---|
| Overall diameter (height) | 31.80" | 808 mm |
| Section width | 9.25" | 235 mm |
| Sidewall height | 7.40" | 188.0 mm |
| Rim diameter | 17" | 431.8 mm |
| Circumference | 99.9" | 2538 mm |
| Revolutions per mile | 634 | |
| Aspect ratio | 80% (sidewall is 80% of the width) | |
Drawn to scale
Among the 124 sizes for 17" wheels on this site, 235/80R17 is #75 by height (shortest: 205/40R17, tallest: 385/70R17).
What people compare 235/80R17 with
Real comparisons drivers search for, worked out against 235/80R17:
| Compared size | Height | Width | Sidewall | Speedo at true 60 |
|---|---|---|---|---|
| 265/70R17 | -0.19" (-0.6%) | +1.18" | -0.10" | 60.4 mph |
| 245/75R17 | -0.33" (-1.04%) | +0.40" | -0.17" | 60.6 mph |
| 255/80R17 | +1.26" (+3.96%) | +0.79" | +0.63" | 57.7 mph |
| 285/70R17 | +0.91" (+2.86%) | +1.97" | +0.45" | 58.3 mph |
How the 235/80R17 numbers are worked out
The size code reads as 235 mm section width, 80% aspect ratio, R for radial construction and 17-inch wheel.
- Sidewall = 235 × 80% = 188.0 mm = 7.40"
- Diameter = 17" + 2 × 7.40" = 31.80"
- Circumference = π × 31.80" = 99.9"
- Revs per mile = 63,360" ÷ 99.9" = 634
Sizes that can replace 235/80R17 on a 17" wheel
Within 3% of 31.80". Last column: speedometer reading at a true 60 mph.
| Size | Diameter | Width | Difference | Speedo at true 60 mph |
|---|---|---|---|---|
| 270/70R17 | 31.88" | 10.63" | +0.25% | 59.8 mph |
| 315/60R17 | 31.88" | 12.40" | +0.25% | 59.8 mph |
| 265/70R17 | 31.61" | 10.43" | -0.6% | 60.4 mph |
| 285/65R17 | 31.59" | 11.22" | -0.66% | 60.4 mph |
| 255/75R17 | 32.06" | 10.04" | +0.82% | 59.5 mph |
| 295/65R17 | 32.10" | 11.61" | +0.94% | 59.4 mph |
| 245/75R17 | 31.47" | 9.65" | -1.04% | 60.6 mph |
| 275/70R17 | 32.16" | 10.83" | +1.13% | 59.3 mph |
| 305/60R17 | 31.41" | 12.01" | -1.23% | 60.7 mph |
| 260/70R17 | 31.33" | 10.24" | -1.48% | 60.9 mph |
| 280/70R17 | 32.43" | 11.02" | +1.98% | 58.8 mph |
| 245/80R17 | 32.43" | 9.65" | +1.98% | 58.8 mph |
One size wider or narrower
- Wider: 245/80R17 — 9.65" wide, 32.43" tall
Same height on a different wheel size
- 305/70R15 15" (+0.03%)
- 285/75R15 15" (+0.09%)
- 265/80R15 15" (-0.35%)
- 255/85R15 15" (+0.85%)
- 245/85R15 15" (-1.26%)
- 295/70R15 15" (-1.7%)
- 275/75R15 15" (-1.76%)
- 315/70R15 15" (+1.76%)
- 295/75R15 15" (+1.95%)
- 235/85R16 16" (-0.22%)
Questions about 235/80R17
How tall is a 235/80R17 tire in inches?
A 235/80R17 tire is 31.80 inches (808 mm) tall: the 17-inch rim plus two sidewalls of 7.40 inches each.
Is 235/80R17 a 32 inch tire?
Yes. At 31.80 inches tall it is commonly called a 32-inch tire.
How many revolutions per mile does a 235/80R17 make?
About 634 revolutions per mile, based on a calculated circumference of 99.9 inches.
What size can replace 235/80R17?
270/70R17 is the closest match on a 17" rim (+0.25% height). Check load index, speed rating and clearance first.
Compare 235/80R17 against any other size with the tire size calculator.