245/70R15 tire size
245/70R15 is a metric size: 28.5" tall, 9.6" wide, on a 15" rim — about a 28.5x9.50R15. The sidewall is 6.8" and the tire turns 708 times per mile.
245/70R15 specs
| Overall diameter (height) | 28.50" · 724 mm |
|---|---|
| Section width | 9.65" · 245 mm |
| Sidewall height | 6.75" · 172 mm (70% of width) |
| Rim diameter | 15" |
| Circumference | 89.55" · 2.275 m |
| Revolutions per mile | 708 (440 per km) |
| Inch (flotation) equivalent | 28.5x9.50R15 |
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" | +1.31% | -10 mm | 60.8 mph | calculate → |
| 215/75R15 | 27.70" | -2.83% | -30 mm | 58.3 mph | calculate → |
| 225/70R15 | 27.40" | -3.87% | -20 mm | 57.7 mph | calculate → |
| 225/75R15 | 28.29" | -0.76% | -20 mm | 59.5 mph | calculate → |
| 235/70R15 | 27.95" | -1.93% | -10 mm | 58.8 mph | calculate → |
| 205/75R15 | 27.11" | -4.90% | -40 mm | 57.1 mph | calculate → |
| 255/70R15 | 29.06" | +1.93% | +10 mm | 61.2 mph | calculate → |
| 265/70R15 | 29.61" | +3.87% | +20 mm | 62.3 mph | calculate → |
| 275/60R15 | 27.99" | -1.80% | +30 mm | 58.9 mph | calculate → |
| 29x10.50R15 | 29.00" | +1.74% | +22 mm | 61.0 mph | calculate → |
| 325/50R15 | 27.80" | -2.49% | +80 mm | 58.5 mph | calculate → |
| 28x10.50R15 | 28.00" | -1.77% | +22 mm | 58.9 mph | calculate → |
| 28x11.50R15 | 28.00" | -1.77% | +47 mm | 58.9 mph | calculate → |
| 28x9.00R15 | 28.00" | -1.77% | -16 mm | 58.9 mph | calculate → |
| 295/55R15 | 27.78" | -2.56% | +50 mm | 58.5 mph | calculate → |
| 29x11.50R15 | 29.00" | +1.74% | +47 mm | 61.0 mph | calculate → |
| 29x15.00R15 | 29.00" | +1.74% | +136 mm | 61.0 mph | calculate → |
| 29x18.00R15 | 29.00" | +1.74% | +212 mm | 61.0 mph | calculate → |
| 29x8.50R15 | 29.00" | +1.74% | -29 mm | 61.0 mph | calculate → |
| 28x10.00R15 | 28.00" | -1.77% | +9 mm | 58.9 mph | calculate → |
| 28x12.00R15 | 28.00" | -1.77% | +60 mm | 58.9 mph | calculate → |
| 28x6.00R15 | 28.00" | -1.77% | -93 mm | 58.9 mph | calculate → |
| 28x7.50R15 | 28.00" | -1.77% | -54 mm | 58.9 mph | calculate → |
| 215/85R15 | 29.39" | +3.11% | -30 mm | 61.9 mph | calculate → |
| 29.5x10.50R15 | 29.50" | +3.49% | +22 mm | 62.1 mph | calculate → |
| 29.5x11.50R15 | 29.50" | +3.49% | +47 mm | 62.1 mph | calculate → |
| 29.5x13.50R15 | 29.50" | +3.49% | +98 mm | 62.1 mph | calculate → |
| 29.5x9.00R15 | 29.50" | +3.49% | -16 mm | 62.1 mph | calculate → |
| 255/65R15 | 28.05" | -1.59% | +10 mm | 59.0 mph | calculate → |
| 29x12.50R15 | 29.00" | +1.74% | +73 mm | 61.0 mph | calculate → |
| 29x15.50R15 | 29.00" | +1.74% | +149 mm | 61.0 mph | calculate → |
| 29x18.50R15 | 29.00" | +1.74% | +225 mm | 61.0 mph | calculate → |
| 28x12.50R15 | 28.00" | -1.77% | +73 mm | 58.9 mph | calculate → |
| 28x13.50R15 | 28.00" | -1.77% | +98 mm | 58.9 mph | calculate → |
| 315/60R15 | 29.88" | +4.83% | +70 mm | 62.9 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 | |
|---|---|---|---|---|---|
| 225/70R16 common | 28.40" | -0.36% | -20 mm | 59.8 mph | calculate → |
| 215/75R16 | 28.70" | +0.68% | -30 mm | 60.4 mph | calculate → |
| 285/55R16 | 28.34" | -0.57% | +40 mm | 59.7 mph | calculate → |
| 195/80R16 | 28.28" | -0.77% | -50 mm | 59.5 mph | calculate → |
Try another size against 245/70R15
Questions
What size is 245/70R15 in inches?
245/70R15 is about 28.5" tall and 9.6" wide on a 15-inch rim — roughly a 28.5x9.50R15 in inch sizing.
What does 245/70R15 mean?
245 mm section width, sidewall 70% of the width (6.75"), radial construction, 15-inch rim.
What tire sizes are equivalent to 245/70R15?
On the same 15" rim, within 3% of the diameter: 225/75R15 (-0.76%), 235/75R15 (+1.31%), 255/65R15 (-1.59%), 29x10.50R15 (+1.74%), 29x11.50R15 (+1.74%), 29x12.50R15 (+1.74%).
How many revolutions per mile does a 245/70R15 tire make?
About 708 revolutions per mile (circumference 89.5").
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.