255/65R15 tire size
255/65R15 is a metric size: 28.1" tall, 10.0" wide, on a 15" rim — about a 28x10.00R15. The sidewall is 6.5" and the tire turns 719 times per mile.
255/65R15 specs
| Overall diameter (height) | 28.05" · 713 mm |
|---|---|
| Section width | 10.04" · 255 mm |
| Sidewall height | 6.53" · 166 mm (65% of width) |
| Rim diameter | 15" |
| Circumference | 88.13" · 2.238 m |
| Revolutions per mile | 719 (447 per km) |
| Inch (flotation) equivalent | 28x10.00R15 |
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" | +2.95% | -20 mm | 61.8 mph | calculate → |
| 215/70R15 | 26.85" | -4.28% | -40 mm | 57.4 mph | calculate → |
| 215/75R15 | 27.70" | -1.26% | -40 mm | 59.2 mph | calculate → |
| 225/70R15 | 27.40" | -2.32% | -30 mm | 58.6 mph | calculate → |
| 225/75R15 | 28.29" | +0.84% | -30 mm | 60.5 mph | calculate → |
| 235/70R15 | 27.95" | -0.35% | -20 mm | 59.8 mph | calculate → |
| 205/75R15 | 27.11" | -3.37% | -50 mm | 58.0 mph | calculate → |
| 255/70R15 | 29.06" | +3.58% | 0 mm | 62.1 mph | calculate → |
| 275/60R15 | 27.99" | -0.21% | +20 mm | 59.9 mph | calculate → |
| 255/60R15 | 27.05" | -3.58% | 0 mm | 57.9 mph | calculate → |
| 325/50R15 | 27.80" | -0.91% | +70 mm | 59.5 mph | calculate → |
| 29x10.50R15 | 29.00" | +3.38% | +12 mm | 62.0 mph | calculate → |
| 28x10.50R15 | 28.00" | -0.18% | +12 mm | 59.9 mph | calculate → |
| 28x11.50R15 | 28.00" | -0.18% | +37 mm | 59.9 mph | calculate → |
| 28x9.00R15 | 28.00" | -0.18% | -26 mm | 59.9 mph | calculate → |
| 295/55R15 | 27.78" | -0.98% | +40 mm | 59.4 mph | calculate → |
| 28x10.00R15 | 28.00" | -0.18% | -1 mm | 59.9 mph | calculate → |
| 28x12.00R15 | 28.00" | -0.18% | +50 mm | 59.9 mph | calculate → |
| 28x6.00R15 | 28.00" | -0.18% | -103 mm | 59.9 mph | calculate → |
| 28x7.50R15 | 28.00" | -0.18% | -64 mm | 59.9 mph | calculate → |
| 29x11.50R15 | 29.00" | +3.38% | +37 mm | 62.0 mph | calculate → |
| 29x15.00R15 | 29.00" | +3.38% | +126 mm | 62.0 mph | calculate → |
| 29x18.00R15 | 29.00" | +3.38% | +202 mm | 62.0 mph | calculate → |
| 29x8.50R15 | 29.00" | +3.38% | -39 mm | 62.0 mph | calculate → |
| 27x9.50R15 | 27.00" | -3.75% | -14 mm | 57.8 mph | calculate → |
| 215/85R15 | 29.39" | +4.77% | -40 mm | 62.9 mph | calculate → |
| 28x12.50R15 | 28.00" | -0.18% | +63 mm | 59.9 mph | calculate → |
| 28x13.50R15 | 28.00" | -0.18% | +88 mm | 59.9 mph | calculate → |
| 245/70R15 | 28.50" | +1.61% | -10 mm | 61.0 mph | calculate → |
| 29x12.50R15 | 29.00" | +3.38% | +63 mm | 62.0 mph | calculate → |
| 29x15.50R15 | 29.00" | +3.38% | +139 mm | 62.0 mph | calculate → |
| 29x18.50R15 | 29.00" | +3.38% | +215 mm | 62.0 mph | calculate → |
| 235/65R15 | 27.03" | -3.65% | -20 mm | 57.8 mph | calculate → |
| 27x10.50R15 | 27.00" | -3.75% | +12 mm | 57.8 mph | calculate → |
| 185R15 | 26.94" | -3.94% | -70 mm | 57.6 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" | -0.72% | -40 mm | 59.6 mph | calculate → |
| 235/65R16 common | 28.03" | -0.08% | -20 mm | 59.9 mph | calculate → |
| 205/75R16 | 28.11" | +0.20% | -50 mm | 60.1 mph | calculate → |
| 28x10.00R14 | 28.00" | -0.18% | -1 mm | 59.9 mph | calculate → |
| 28x11.00R14 | 28.00" | -0.18% | +24 mm | 59.9 mph | calculate → |
| 28x8.50R14 | 28.00" | -0.18% | -39 mm | 59.9 mph | calculate → |
| 255/60R16 | 28.05" | -0.01% | 0 mm | 60.0 mph | calculate → |
| 28x11.50R16 | 28.00" | -0.18% | +37 mm | 59.9 mph | calculate → |
| 195/80R16 | 28.28" | +0.83% | -60 mm | 60.5 mph | calculate → |
Try another size against 255/65R15
Questions
What size is 255/65R15 in inches?
255/65R15 is about 28.1" tall and 10.0" wide on a 15-inch rim — roughly a 28x10.00R15 in inch sizing.
What does 255/65R15 mean?
255 mm section width, sidewall 65% of the width (6.53"), radial construction, 15-inch rim.
What tire sizes are equivalent to 255/65R15?
On the same 15" rim, within 3% of the diameter: 28x10.50R15 (-0.18%), 28x10.00R15 (-0.18%), 28x11.50R15 (-0.18%), 28x12.50R15 (-0.18%), 28x12.00R15 (-0.18%), 28x13.50R15 (-0.18%).
How many revolutions per mile does a 255/65R15 tire make?
About 719 revolutions per mile (circumference 88.1").
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.