175/80R15 tire size in inches
A 175/80R15 tire measures
26.0" tall × 6.9" wide
5.51" sidewall on a 15" wheel. 775 revolutions per mile.
175/80R15 means a tire 175 mm wide, with sidewalls 80% as tall as the tire is wide (140 mm), radial construction (R), for a 15 inch wheel.
175/80R15 specs
| Overall diameter (height) | 26.02 inches (661 mm) |
|---|---|
| Section width | 6.89 inches (175 mm) |
| Sidewall height | 5.51 inches (140 mm) |
| Wheel (rim) diameter | 15 inches |
| Circumference | 81.8 inches (2,077 mm) |
| Revolutions per mile | 775 |
| Revolutions per kilometer | 482 |
| Approximate rim width | 4.5" to 6.0" |
| In inches (flotation style) | 26.0x6.9R15 |
| Aspect ratio | 80% |
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 175/80R15 on a 15" wheel
These 15" sizes are within 3% of 175/80R15's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 165/85R15 | 26.04" | 6.50" | +0.1% | 60.0 mph | Compare |
| 255/55R15 | 26.04" | 10.04" | +0.1% | 60.0 mph | Compare |
| 215/65R15 | 26.00" | 8.46" | −0.1% | 60.0 mph | Compare |
| 235/60R15 | 26.10" | 9.25" | +0.3% | 60.2 mph | Compare |
| 185/75R15 | 25.93" | 7.28" | −0.4% | 59.8 mph | Compare |
| 285/50R15 | 26.22" | 11.22" | +0.8% | 60.5 mph | Compare |
| 275/50R15 | 25.83" | 10.83" | −0.8% | 59.5 mph | Compare |
| 195/70R15 | 25.75" | 7.68" | −1.1% | 59.4 mph | Compare |
| 205/70R15 | 26.30" | 8.07" | +1.1% | 60.6 mph | Compare |
| 225/60R15 | 25.63" | 8.86" | −1.5% | 59.1 mph | Compare |
| 245/55R15 | 25.61" | 9.65" | −1.6% | 59.0 mph | Compare |
| 265/55R15 | 26.48" | 10.43" | +1.7% | 61.0 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 255/30R20 | 20" | 26.02" | 0.0% | Compare |
| 235/65R14 | 14" | 26.03" | 0.0% | Compare |
| 255/35R19 | 19" | 26.03" | 0.0% | Compare |
| 255/25R21 | 21" | 26.02" | 0.0% | Compare |
| 255/40R18 | 18" | 26.03" | 0.0% | Compare |
| 255/45R17 | 17" | 26.04" | 0.0% | Compare |
| 255/50R16 | 16" | 26.04" | +0.1% | Compare |
| 305/25R20 | 20" | 26.00" | −0.1% | Compare |
| 255/60R14 | 14" | 26.05" | +0.1% | Compare |
| 195/85R13 | 13" | 26.05" | +0.1% | Compare |
| 355/25R19 | 19" | 25.99" | −0.1% | Compare |
| 195/65R16 | 16" | 25.98" | −0.2% | Compare |
One size up or down
- 165/80R15narrower: 25.4" × 6.5"
- 185/80R15wider: 26.7" × 7.3"
- 175/75R15lower profile: 25.3" × 6.9"
- 175/85R15taller sidewall: 26.7" × 6.9"
Compare 175/80R15 with another size
Questions
- How tall is a 175/80R15 tire?
- A 175/80R15 tire is 26.0 inches tall (661 mm), calculated from the size. It is 6.9 inches wide with 5.5 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 175/80R15 mean?
- 175/80R15 means a tire 175 mm wide, with sidewalls 80% as tall as the tire is wide (140 mm), radial construction (R), for a 15 inch wheel.
- How many revolutions per mile does a 175/80R15 tire make?
- About 775 revolutions per mile, based on a circumference of 81.8 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 175/80R15 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 165/85R15 instead of 175/80R15?
- 165/85R15 is +0.02 inches (+0.1%) 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.