235/70R15 tire size
235/70R15 is a metric size: 28.0" tall, 9.3" wide, on a 15" rim — about a 28x9.50R15. The sidewall is 6.5" and the tire turns 722 times per mile.
235/70R15 specs
| Overall diameter (height) | 27.95" · 710 mm |
|---|---|
| Section width | 9.25" · 235 mm |
| Sidewall height | 6.48" · 165 mm (70% of width) |
| Rim diameter | 15" |
| Circumference | 87.82" · 2.231 m |
| Revolutions per mile | 722 (448 per km) |
| Inch (flotation) equivalent | 28x9.50R15 |
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 | |
|---|---|---|---|---|---|
| 235/75R15 common | 28.88" | +3.31% | 0 mm | 62.0 mph | compare → |
| 215/70R15 | 26.85" | -3.94% | -20 mm | 57.6 mph | compare → |
| 215/75R15 | 27.70" | -0.92% | -20 mm | 59.5 mph | compare → |
| 225/70R15 | 27.40" | -1.97% | -10 mm | 58.8 mph | compare → |
| 225/75R15 | 28.29" | +1.20% | -10 mm | 60.7 mph | compare → |
| 205/75R15 | 27.11" | -3.03% | -30 mm | 58.2 mph | compare → |
| 255/70R15 | 29.06" | +3.94% | +20 mm | 62.4 mph | calculate → |
| 275/60R15 | 27.99" | +0.14% | +40 mm | 60.1 mph | calculate → |
| 255/60R15 | 27.05" | -3.24% | +20 mm | 58.1 mph | calculate → |
| 295/50R15 | 26.61" | -4.79% | +60 mm | 57.1 mph | calculate → |
| 245/60R15 | 26.57" | -4.93% | +10 mm | 57.0 mph | calculate → |
| 325/50R15 | 27.80" | -0.56% | +90 mm | 59.7 mph | calculate → |
| 29x10.50R15 | 29.00" | +3.75% | +32 mm | 62.2 mph | calculate → |
| 28x10.50R15 | 28.00" | +0.17% | +32 mm | 60.1 mph | calculate → |
| 28x11.50R15 | 28.00" | +0.17% | +57 mm | 60.1 mph | calculate → |
| 28x9.00R15 | 28.00" | +0.17% | -6 mm | 60.1 mph | calculate → |
| 295/55R15 | 27.78" | -0.63% | +60 mm | 59.6 mph | calculate → |
| 28x10.00R15 | 28.00" | +0.17% | +19 mm | 60.1 mph | calculate → |
| 28x12.00R15 | 28.00" | +0.17% | +70 mm | 60.1 mph | calculate → |
| 28x6.00R15 | 28.00" | +0.17% | -83 mm | 60.1 mph | calculate → |
| 28x7.50R15 | 28.00" | +0.17% | -44 mm | 60.1 mph | calculate → |
| 27x9.50R15 | 27.00" | -3.41% | +6 mm | 58.0 mph | calculate → |
| 29x11.50R15 | 29.00" | +3.75% | +57 mm | 62.2 mph | calculate → |
| 29x15.00R15 | 29.00" | +3.75% | +146 mm | 62.2 mph | calculate → |
| 29x18.00R15 | 29.00" | +3.75% | +222 mm | 62.2 mph | calculate → |
| 29x8.50R15 | 29.00" | +3.75% | -19 mm | 62.2 mph | calculate → |
| 28x12.50R15 | 28.00" | +0.17% | +83 mm | 60.1 mph | calculate → |
| 28x13.50R15 | 28.00" | +0.17% | +108 mm | 60.1 mph | calculate → |
| 255/65R15 | 28.05" | +0.35% | +20 mm | 60.2 mph | calculate → |
| 245/70R15 | 28.50" | +1.97% | +10 mm | 61.2 mph | calculate → |
| 235/65R15 | 27.03" | -3.31% | 0 mm | 58.0 mph | calculate → |
| 27x10.50R15 | 27.00" | -3.41% | +32 mm | 58.0 mph | calculate → |
| 185R15 | 26.94" | -3.61% | -50 mm | 57.8 mph | calculate → |
| 29x12.50R15 | 29.00" | +3.75% | +83 mm | 62.2 mph | calculate → |
| 29x15.50R15 | 29.00" | +3.75% | +159 mm | 62.2 mph | calculate → |
| 29x18.50R15 | 29.00" | +3.75% | +235 mm | 62.2 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 | |
|---|---|---|---|---|---|
| 215/70R16 common | 27.85" | -0.37% | -20 mm | 59.8 mph | compare → |
| 235/65R16 common | 28.03" | +0.27% | 0 mm | 60.2 mph | compare → |
| 205/75R16 | 28.11" | +0.55% | -30 mm | 60.3 mph | calculate → |
| 28x10.00R14 | 28.00" | +0.17% | +19 mm | 60.1 mph | calculate → |
| 28x11.00R14 | 28.00" | +0.17% | +44 mm | 60.1 mph | calculate → |
| 28x8.50R14 | 28.00" | +0.17% | -19 mm | 60.1 mph | calculate → |
| 28x11.50R16 | 28.00" | +0.17% | +57 mm | 60.1 mph | calculate → |
| 255/60R16 | 28.05" | +0.34% | +20 mm | 60.2 mph | calculate → |
Try another size against 235/70R15
Questions
What size is 235/70R15 in inches?
235/70R15 is about 28.0" tall and 9.3" wide on a 15-inch rim — roughly a 28x9.50R15 in inch sizing.
What does 235/70R15 mean?
235 mm section width, sidewall 70% of the width (6.48"), radial construction, 15-inch rim.
What tire sizes are equivalent to 235/70R15?
On the same 15" rim, within 3% of the diameter: 275/60R15 (+0.14%), 28x10.50R15 (+0.17%), 28x10.00R15 (+0.17%), 28x11.50R15 (+0.17%), 28x12.50R15 (+0.17%), 28x12.00R15 (+0.17%).
How many revolutions per mile does a 235/70R15 tire make?
About 722 revolutions per mile (circumference 87.8").
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.