235/75R15 tire size
235/75R15 is a metric size: 28.9" tall, 9.3" wide, on a 15" rim — about a 29x9.50R15. The sidewall is 6.9" and the tire turns 698 times per mile.
235/75R15 specs
| Overall diameter (height) | 28.88" · 733 mm |
|---|---|
| Section width | 9.25" · 235 mm |
| Sidewall height | 6.94" · 176 mm (75% of width) |
| Rim diameter | 15" |
| Circumference | 90.72" · 2.304 m |
| Revolutions per mile | 698 (434 per km) |
| Inch (flotation) equivalent | 29x9.50R15 |
Equivalent sizes on a 15" rim
Sizes within ±5% of the overall diameter. Green rows are inside the usual ±3% limit for keeping the speedometer, ABS and gearing right; red rows are bigger changes that need clearance checks.
| Size | Diameter | Difference | Width | Speedo at 60 | |
|---|---|---|---|---|---|
| 215/75R15 | 27.70" | -4.09% | -20 mm | 57.5 mph | compare → |
| 30x9.50R15 | 30.00" | +3.89% | +6 mm | 62.3 mph | compare → |
| 225/75R15 | 28.29" | -2.04% | -10 mm | 58.8 mph | compare → |
| 235/70R15 | 27.95" | -3.20% | 0 mm | 58.1 mph | compare → |
| 255/70R15 | 29.06" | +0.61% | +20 mm | 60.4 mph | calculate → |
| 265/70R15 | 29.61" | +2.52% | +30 mm | 61.5 mph | calculate → |
| 275/60R15 | 27.99" | -3.07% | +40 mm | 58.2 mph | calculate → |
| 29x10.50R15 | 29.00" | +0.42% | +32 mm | 60.3 mph | calculate → |
| 325/50R15 | 27.80" | -3.75% | +90 mm | 57.8 mph | calculate → |
| 295/65R15 | 30.10" | +4.23% | +60 mm | 62.5 mph | calculate → |
| 28x10.50R15 | 28.00" | -3.04% | +32 mm | 58.2 mph | calculate → |
| 28x11.50R15 | 28.00" | -3.04% | +57 mm | 58.2 mph | calculate → |
| 28x9.00R15 | 28.00" | -3.04% | -6 mm | 58.2 mph | calculate → |
| 295/55R15 | 27.78" | -3.82% | +60 mm | 57.7 mph | calculate → |
| 30x11.50R15 | 30.00" | +3.89% | +57 mm | 62.3 mph | calculate → |
| 29x11.50R15 | 29.00" | +0.42% | +57 mm | 60.3 mph | calculate → |
| 29x15.00R15 | 29.00" | +0.42% | +146 mm | 60.3 mph | calculate → |
| 29x18.00R15 | 29.00" | +0.42% | +222 mm | 60.3 mph | calculate → |
| 29x8.50R15 | 29.00" | +0.42% | -19 mm | 60.3 mph | calculate → |
| 215/85R15 | 29.39" | +1.77% | -20 mm | 61.1 mph | calculate → |
| 29.5x10.50R15 | 29.50" | +2.15% | +32 mm | 61.3 mph | calculate → |
| 29.5x11.50R15 | 29.50" | +2.15% | +57 mm | 61.3 mph | calculate → |
| 29.5x13.50R15 | 29.50" | +2.15% | +108 mm | 61.3 mph | calculate → |
| 29.5x9.00R15 | 29.50" | +2.15% | -6 mm | 61.3 mph | calculate → |
| 28x10.00R15 | 28.00" | -3.04% | +19 mm | 58.2 mph | calculate → |
| 28x12.00R15 | 28.00" | -3.04% | +70 mm | 58.2 mph | calculate → |
| 28x6.00R15 | 28.00" | -3.04% | -83 mm | 58.2 mph | calculate → |
| 28x7.50R15 | 28.00" | -3.04% | -44 mm | 58.2 mph | calculate → |
| 30x10.50R15 | 30.00" | +3.89% | +32 mm | 62.3 mph | calculate → |
| 30x10.00R15 | 30.00" | +3.89% | +19 mm | 62.3 mph | calculate → |
| 30x12.00R15 | 30.00" | +3.89% | +70 mm | 62.3 mph | calculate → |
| 30x9.00R15 | 30.00" | +3.89% | -6 mm | 62.3 mph | calculate → |
| 255/75R15 | 30.06" | +4.09% | +20 mm | 62.5 mph | calculate → |
| 29x12.50R15 | 29.00" | +0.42% | +83 mm | 60.3 mph | calculate → |
| 29x15.50R15 | 29.00" | +0.42% | +159 mm | 60.3 mph | calculate → |
| 29x18.50R15 | 29.00" | +0.42% | +235 mm | 60.3 mph | calculate → |
| 245/70R15 | 28.50" | -1.30% | +10 mm | 59.2 mph | calculate → |
| 255/65R15 | 28.05" | -2.86% | +20 mm | 58.3 mph | calculate → |
| 28x12.50R15 | 28.00" | -3.04% | +83 mm | 58.2 mph | calculate → |
| 28x13.50R15 | 28.00" | -3.04% | +108 mm | 58.2 mph | calculate → |
| 315/60R15 | 29.88" | +3.48% | +80 mm | 62.1 mph | calculate → |
| 30x12.50R15 | 30.00" | +3.89% | +83 mm | 62.3 mph | calculate → |
| 30x13.50R15 | 30.00" | +3.89% | +108 mm | 62.3 mph | calculate → |
| 30x7.00R15 | 30.00" | +3.89% | -57 mm | 62.3 mph | calculate → |
Plus / minus sizing: 14" and 16" rims
Same overall height on a different rim. Check wheel width and clearance before switching.
| Size | Diameter | Difference | Width | Speedo at 60 | |
|---|---|---|---|---|---|
| 235/70R16 common | 28.95" | +0.26% | 0 mm | 60.2 mph | compare → |
| 255/65R16 | 29.05" | +0.60% | +20 mm | 60.4 mph | compare → |
| 215/75R16 | 28.70" | -0.63% | -20 mm | 59.6 mph | calculate → |
| 29x9.00R14 | 29.00" | +0.42% | -6 mm | 60.3 mph | calculate → |
| 205/80R16 | 28.91" | +0.12% | -30 mm | 60.1 mph | calculate → |
| 29x11.00R14 | 29.00" | +0.42% | +44 mm | 60.3 mph | calculate → |
| 225/85R14 | 29.06" | +0.63% | -10 mm | 60.4 mph | calculate → |
| 275/60R16 | 28.99" | +0.40% | +40 mm | 60.2 mph | calculate → |
Try another size against 235/75R15
Questions
What size is 235/75R15 in inches?
235/75R15 is about 28.9" tall and 9.3" wide on a 15-inch rim — roughly a 29x9.50R15 in inch sizing.
What does 235/75R15 mean?
235 mm section width, sidewall 75% of the width (6.94"), radial construction, 15-inch rim.
What tire sizes are equivalent to 235/75R15?
On the same 15" rim, within 3% of the diameter: 29x10.50R15 (+0.42%), 29x11.50R15 (+0.42%), 29x12.50R15 (+0.42%), 29x15.50R15 (+0.42%), 29x15.00R15 (+0.42%), 29x18.50R15 (+0.42%).
How many revolutions per mile does a 235/75R15 tire make?
About 698 revolutions per mile (circumference 90.7").
How these numbers are computed
Diameter = rim + 2 × sidewall, sidewall = width × aspect ÷ 100, circumference = π × diameter, revolutions per mile = 63,360 ÷ circumference. Real tires differ by brand by a few tenths of an inch. Last reviewed October 14, 2026.