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235/75R15 tire size in inches
235/75R15 is 28.88" tall and 9.25" wide, and fits a 15" rim. In flotation (inch) sizing that is roughly 28.9x9.3R15.
235/75R15 dimensions
| Measurement | Inches | Metric |
|---|---|---|
| Overall diameter (height) | 28.88" | 734 mm |
| Section width | 9.25" | 235 mm |
| Sidewall height | 6.94" | 176.2 mm |
| Rim diameter | 15" | 381.0 mm |
| Circumference | 90.7" | 2304 mm |
| Revolutions per mile | 698 | |
| Aspect ratio | 75% (sidewall is 75% of the width) | |
Drawn to scale
Among the 86 sizes for 15" wheels on this site, 235/75R15 is #55 by height (shortest: 195/50R15, tallest: 325/75R15).
What people compare 235/75R15 with
Real comparisons drivers search for, worked out against 235/75R15:
| Compared size | Height | Width | Sidewall | Speedo at true 60 |
|---|---|---|---|---|
| 225/75R15 | -0.59" (-2.04%) | -0.39" | -0.30" | 61.3 mph |
| 215/75R15 | -1.18" (-4.09%) | -0.79" | -0.59" | 62.6 mph |
| 235/70R15 | -0.93" (-3.22%) | 0.00" | -0.46" | 62 mph |
| 265/75R15 | +1.77" (+6.13%) | +1.18" | +0.88" | 56.5 mph |
| 255/70R15 | +0.18" (+0.62%) | +0.79" | +0.09" | 59.6 mph |
| 225/70R15 | -1.48" (-5.12%) | -0.39" | -0.74" | 63.2 mph |
| 275/60R15 | -0.89" (-3.08%) | +1.58" | -0.44" | 61.9 mph |
| 265/70R15 | +0.73" (+2.53%) | +1.18" | +0.36" | 58.5 mph |
How the 235/75R15 numbers are worked out
The size code reads as 235 mm section width, 75% aspect ratio, R for radial construction and 15-inch wheel.
- Sidewall = 235 × 75% = 176.2 mm = 6.94"
- Diameter = 15" + 2 × 6.94" = 28.88"
- Circumference = π × 28.88" = 90.7"
- Revs per mile = 63,360" ÷ 90.7" = 698
Sizes that can replace 235/75R15 on a 15" wheel
Within 3% of 28.88". Last column: speedometer reading at a true 60 mph.
| Size | Diameter | Width | Difference | Speedo at true 60 mph |
|---|---|---|---|---|
| 295/60R15 | 28.94" | 11.61" | +0.21% | 59.9 mph |
| 255/70R15 | 29.06" | 10.04" | +0.62% | 59.6 mph |
| 275/65R15 | 29.07" | 10.83" | +0.66% | 59.6 mph |
| 225/80R15 | 29.17" | 8.86" | +1% | 59.4 mph |
| 265/65R15 | 28.56" | 10.43" | -1.11% | 60.7 mph |
| 215/80R15 | 28.54" | 8.46" | -1.18% | 60.7 mph |
| 245/70R15 | 28.50" | 9.65" | -1.32% | 60.8 mph |
| 285/60R15 | 28.46" | 11.22" | -1.45% | 60.9 mph |
| 305/60R15 | 29.41" | 12.01" | +1.84% | 58.9 mph |
| 225/75R15 | 28.29" | 8.86" | -2.04% | 61.3 mph |
| 245/75R15 | 29.47" | 9.65" | +2.04% | 58.8 mph |
| 285/65R15 | 29.59" | 11.22" | +2.46% | 58.6 mph |
One size wider or narrower
- Narrower: 225/75R15 — 8.86" wide, 28.29" tall
- Wider: 245/75R15 — 9.65" wide, 29.47" tall
Same height on a different wheel size
- 205/80R16 16" (+0.1%)
- 235/70R16 16" (+0.24%)
- 275/60R16 16" (+0.38%)
- 255/65R16 16" (+0.59%)
- 215/75R16 16" (-0.62%)
- 305/55R16 16" (+1.14%)
- 245/65R16 16" (-1.18%)
- 265/60R16 16" (-1.25%)
- 225/75R16 16" (+1.42%)
- 225/70R16 16" (-1.66%)
Questions about 235/75R15
How tall is a 235/75R15 tire in inches?
A 235/75R15 tire is 28.88 inches (734 mm) tall: the 15-inch rim plus two sidewalls of 6.94 inches each.
Is 235/75R15 a 29 inch tire?
Yes. At 28.88 inches tall it is commonly called a 29-inch tire.
How many revolutions per mile does a 235/75R15 make?
About 698 revolutions per mile, based on a calculated circumference of 90.7 inches.
What size can replace 235/75R15?
295/60R15 is the closest match on a 15" rim (+0.21% height). Check load index, speed rating and clearance first.
Compare 235/75R15 against any other size with the tire size calculator.