175/75R15 tire size in inches
A 175/75R15 tire measures
25.3" tall × 6.9" wide
5.17" sidewall on a 15" wheel. 796 revolutions per mile.
175/75R15 means a tire 175 mm wide, with sidewalls 75% as tall as the tire is wide (131 mm), radial construction (R), for a 15 inch wheel.
175/75R15 specs
| Overall diameter (height) | 25.33 inches (644 mm) |
|---|---|
| Section width | 6.89 inches (175 mm) |
| Sidewall height | 5.17 inches (131 mm) |
| Wheel (rim) diameter | 15 inches |
| Circumference | 79.6 inches (2,022 mm) |
| Revolutions per mile | 796 |
| Revolutions per kilometer | 495 |
| Approximate rim width | 4.5" to 6.0" |
| In inches (flotation style) | 25.3x6.9R15 |
| Aspect ratio | 75% |
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 175/75R15 on a 15" wheel
These 15" sizes are within 3% of 175/75R15's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 165/80R15 | 25.39" | 6.50" | +0.2% | 60.1 mph | Compare |
| 265/50R15 | 25.43" | 10.43" | +0.4% | 60.2 mph | Compare |
| 185/70R15 | 25.20" | 7.28" | −0.5% | 59.7 mph | Compare |
| 205/65R15 | 25.49" | 8.07" | +0.6% | 60.4 mph | Compare |
| 235/55R15 | 25.18" | 9.25" | −0.6% | 59.6 mph | Compare |
| 215/60R15 | 25.16" | 8.46" | −0.7% | 59.6 mph | Compare |
| 285/45R15 | 25.10" | 11.22" | −0.9% | 59.4 mph | Compare |
| 245/55R15 | 25.61" | 9.65" | +1.1% | 60.7 mph | Compare |
| 225/60R15 | 25.63" | 8.86" | +1.2% | 60.7 mph | Compare |
| 255/50R15 | 25.04" | 10.04" | −1.2% | 59.3 mph | Compare |
| 195/65R15 | 24.98" | 7.68" | −1.4% | 59.2 mph | Compare |
| 195/70R15 | 25.75" | 7.68" | +1.6% | 61.0 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 235/45R17 | 17" | 25.33" | 0.0% | Compare |
| 265/40R17 | 17" | 25.35" | 0.0% | Compare |
| 225/30R20 | 20" | 25.31" | −0.1% | Compare |
| 215/55R16 | 16" | 25.31" | −0.1% | Compare |
| 265/35R18 | 18" | 25.30" | −0.1% | Compare |
| 205/70R14 | 14" | 25.30" | −0.1% | Compare |
| 295/40R16 | 16" | 25.29" | −0.2% | Compare |
| 185/85R13 | 13" | 25.38" | +0.2% | Compare |
| 195/80R13 | 13" | 25.28" | −0.2% | Compare |
| 265/45R16 | 16" | 25.39" | +0.2% | Compare |
| 325/25R19 | 19" | 25.40" | +0.2% | Compare |
| 225/70R13 | 13" | 25.40" | +0.3% | Compare |
One size up or down
- 165/75R15narrower: 24.7" × 6.5"
- 185/75R15wider: 25.9" × 7.3"
- 175/70R15lower profile: 24.6" × 6.9"
- 175/80R15taller sidewall: 26.0" × 6.9"
Compare 175/75R15 with another size
Questions
- How tall is a 175/75R15 tire?
- A 175/75R15 tire is 25.3 inches tall (644 mm), calculated from the size. It is 6.9 inches wide with 5.2 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 175/75R15 mean?
- 175/75R15 means a tire 175 mm wide, with sidewalls 75% as tall as the tire is wide (131 mm), radial construction (R), for a 15 inch wheel.
- How many revolutions per mile does a 175/75R15 tire make?
- About 796 revolutions per mile, based on a circumference of 79.6 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 175/75R15 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 165/80R15 instead of 175/75R15?
- 165/80R15 is +0.06 inches (+0.2%) in overall diameter, so at an indicated 60 mph you would be doing 60.1 mph. Differences under 3% are usually fine, but check clearance, load index and your vehicle's placard.