175/70R15 tire size
175/70R15 is a metric size: 24.6" tall, 6.9" wide, on a 15" rim — about a 24.5x7.00R15. The sidewall is 4.8" and the tire turns 818 times per mile.
175/70R15 specs
| Overall diameter (height) | 24.65" · 626 mm |
|---|---|
| Section width | 6.89" · 175 mm |
| Sidewall height | 4.82" · 123 mm (70% of width) |
| Rim diameter | 15" |
| Circumference | 77.43" · 1.967 m |
| Revolutions per mile | 818 (508 per km) |
| Inch (flotation) equivalent | 24.5x7.00R15 |
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 | |
|---|---|---|---|---|---|
| 195/65R15 common | 24.98" | +1.36% | +20 mm | 60.8 mph | calculate → |
| 205/65R15 common | 25.49" | +3.43% | +30 mm | 62.1 mph | calculate → |
| 185/65R15 common | 24.47" | -0.72% | +10 mm | 59.6 mph | calculate → |
| 195/60R15 common | 24.21" | -1.76% | +20 mm | 58.9 mph | calculate → |
| 185/60R15 common | 23.74" | -3.67% | +10 mm | 57.8 mph | calculate → |
| 175/65R15 | 23.96" | -2.80% | 0 mm | 58.3 mph | calculate → |
| 205/60R15 | 24.69" | +0.16% | +30 mm | 60.1 mph | calculate → |
| 195/55R15 | 23.44" | -4.87% | +20 mm | 57.1 mph | calculate → |
| 215/60R15 | 25.16" | +2.08% | +40 mm | 61.2 mph | calculate → |
| 225/50R15 | 23.86" | -3.19% | +50 mm | 58.1 mph | calculate → |
| 195/70R15 | 25.75" | +4.47% | +20 mm | 62.7 mph | calculate → |
| 275/50R15 | 25.83" | +4.79% | +100 mm | 62.9 mph | calculate → |
| 225/60R15 | 25.63" | +3.99% | +50 mm | 62.4 mph | calculate → |
| 245/50R15 | 24.65" | 0.00% | +70 mm | 60.0 mph | calculate → |
| 345/35R15 | 24.51" | -0.56% | +170 mm | 59.7 mph | calculate → |
| 205/55R15 | 23.88" | -3.12% | +30 mm | 58.1 mph | calculate → |
| 155/80R15 | 24.76" | +0.48% | -20 mm | 60.3 mph | calculate → |
| 24.5x8.00R15 | 24.50" | -0.59% | +28 mm | 59.6 mph | calculate → |
| 235/50R15 | 24.25" | -1.60% | +60 mm | 59.0 mph | calculate → |
| 185/70R15 | 25.20" | +2.24% | +10 mm | 61.3 mph | calculate → |
| 265/50R15 | 25.43" | +3.19% | +90 mm | 61.9 mph | calculate → |
| 165/65R15 | 23.44" | -4.87% | -10 mm | 57.1 mph | calculate → |
| 225/55R15 | 24.74" | +0.40% | +50 mm | 60.2 mph | calculate → |
| 165/80R15 | 25.39" | +3.04% | -10 mm | 61.8 mph | calculate → |
| 165R15 | 25.65" | +4.09% | -10 mm | 62.5 mph | calculate → |
| 215/50R15 | 23.46" | -4.79% | +40 mm | 57.1 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 | |
|---|---|---|---|---|---|
| 205/55R16 common | 24.88" | +0.94% | +30 mm | 60.6 mph | calculate → |
| 195/55R16 common | 24.44" | -0.81% | +20 mm | 59.5 mph | calculate → |
| 225/50R16 common | 24.86" | +0.86% | +50 mm | 60.5 mph | calculate → |
| 195/70R14 | 24.75" | +0.42% | +20 mm | 60.2 mph | calculate → |
| 245/45R16 | 24.68" | +0.14% | +70 mm | 60.1 mph | calculate → |
| 185/60R16 | 24.74" | +0.38% | +10 mm | 60.2 mph | calculate → |
| 225/60R14 | 24.63" | -0.06% | +50 mm | 60.0 mph | calculate → |
| 215/50R16 | 24.46" | -0.73% | +40 mm | 59.6 mph | calculate → |
Try another size against 175/70R15
Questions
What size is 175/70R15 in inches?
175/70R15 is about 24.6" tall and 6.9" wide on a 15-inch rim — roughly a 24.5x7.00R15 in inch sizing.
What does 175/70R15 mean?
175 mm section width, sidewall 70% of the width (4.82"), radial construction, 15-inch rim.
What tire sizes are equivalent to 175/70R15?
On the same 15" rim, within 3% of the diameter: 245/50R15 (0.00%), 205/60R15 (+0.16%), 225/55R15 (+0.40%), 155/80R15 (+0.48%), 345/35R15 (-0.56%), 24.5x8.00R15 (-0.59%).
How many revolutions per mile does a 175/70R15 tire make?
About 818 revolutions per mile (circumference 77.4").
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.