175/70R15 tire size in inches
A 175/70R15 tire measures
24.6" tall × 6.9" wide
4.82" sidewall on a 15" wheel. 818 revolutions per mile.
175/70R15 means a tire 175 mm wide, with sidewalls 70% as tall as the tire is wide (123 mm), radial construction (R), for a 15 inch wheel.
175/70R15 specs
| Overall diameter (height) | 24.65 inches (626 mm) |
|---|---|
| Section width | 6.89 inches (175 mm) |
| Sidewall height | 4.82 inches (123 mm) |
| Wheel (rim) diameter | 15 inches |
| Circumference | 77.4 inches (1,967 mm) |
| Revolutions per mile | 818 |
| Revolutions per kilometer | 508 |
| Approximate rim width | 4.5" to 6.0" |
| In inches (flotation style) | 24.6x6.9R15 |
| Aspect ratio | 70% |
Calculated from the size. Real tires differ by brand, model and tread depth, typically by a few tenths of an inch.
Sizes that can replace 175/70R15 on a 15" wheel
These 15" sizes are within 3% of 175/70R15's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 245/50R15 | 24.65" | 9.65" | 0.0% | 60.0 mph | Compare |
| 205/60R15 | 24.69" | 8.07" | +0.2% | 60.1 mph | Compare |
| 165/75R15 | 24.74" | 6.50" | +0.4% | 60.2 mph | Compare |
| 225/55R15 | 24.74" | 8.86" | +0.4% | 60.2 mph | Compare |
| 275/45R15 | 24.74" | 10.83" | +0.4% | 60.2 mph | Compare |
| 185/65R15 | 24.47" | 7.28" | −0.7% | 59.6 mph | Compare |
| 265/45R15 | 24.39" | 10.43" | −1.0% | 59.4 mph | Compare |
| 195/65R15 | 24.98" | 7.68" | +1.4% | 60.8 mph | Compare |
| 215/55R15 | 24.31" | 8.46" | −1.4% | 59.2 mph | Compare |
| 255/50R15 | 25.04" | 10.04" | +1.6% | 61.0 mph | Compare |
| 235/50R15 | 24.25" | 9.25" | −1.6% | 59.0 mph | Compare |
| 195/60R15 | 24.21" | 7.68" | −1.8% | 58.9 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 205/35R19 | 19" | 24.65" | 0.0% | Compare |
| 185/80R13 | 13" | 24.65" | 0.0% | Compare |
| 275/40R16 | 16" | 24.66" | +0.1% | Compare |
| 225/60R14 | 14" | 24.63" | −0.1% | Compare |
| 235/25R20 | 20" | 24.63" | −0.1% | Compare |
| 215/45R17 | 17" | 24.62" | −0.1% | Compare |
| 195/50R17 | 17" | 24.68" | +0.1% | Compare |
| 245/45R16 | 16" | 24.68" | +0.1% | Compare |
| 245/55R14 | 14" | 24.61" | −0.1% | Compare |
| 285/25R19 | 19" | 24.61" | −0.1% | Compare |
| 175/85R13 | 13" | 24.71" | +0.3% | Compare |
| 275/35R17 | 17" | 24.58" | −0.3% | Compare |
One size up or down
- 165/70R15narrower: 24.1" × 6.5"
- 185/70R15wider: 25.2" × 7.3"
- 175/65R15lower profile: 24.0" × 6.9"
- 175/75R15taller sidewall: 25.3" × 6.9"
Compare 175/70R15 with another size
Questions
- How tall is a 175/70R15 tire?
- A 175/70R15 tire is 24.6 inches tall (626 mm), calculated from the size. It is 6.9 inches wide with 4.8 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 175/70R15 mean?
- 175/70R15 means a tire 175 mm wide, with sidewalls 70% as tall as the tire is wide (123 mm), radial construction (R), for a 15 inch wheel.
- How many revolutions per mile does a 175/70R15 tire make?
- About 818 revolutions per mile, based on a circumference of 77.4 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 175/70R15 tire?
- Roughly 4.5" to 6.0". Check the tire maker's approved rim range for the exact model before buying wheels.
- Can I use 245/50R15 instead of 175/70R15?
- 245/50R15 is 0.00 inches (0.0%) in overall diameter, so at an indicated 60 mph you would be doing 60.0 mph. Differences under 3% are usually fine, but check clearance, load index and your vehicle's placard.