275/75R15 tire size in inches
A 275/75R15 tire measures
31.2" tall × 10.8" wide
8.12" sidewall on a 15" wheel. 646 revolutions per mile.
275/75R15 means a tire 275 mm wide, with sidewalls 75% as tall as the tire is wide (206 mm), radial construction (R), for a 15 inch wheel.
275/75R15 specs
| Overall diameter (height) | 31.24 inches (794 mm) |
|---|---|
| Section width | 10.83 inches (275 mm) |
| Sidewall height | 8.12 inches (206 mm) |
| Wheel (rim) diameter | 15 inches |
| Circumference | 98.1 inches (2,493 mm) |
| Revolutions per mile | 646 |
| Revolutions per kilometer | 401 |
| Approximate rim width | 7.5" to 9.0" |
| In inches (flotation style) | 31.2x10.8R15 |
| 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 275/75R15 on a 15" wheel
These 15" sizes are within 3% of 275/75R15's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 245/85R15 | 31.40" | 9.65" | +0.5% | 60.3 mph | Compare |
| 255/80R15 | 31.06" | 10.04" | −0.6% | 59.7 mph | Compare |
| 31x10.50R15 | 31.00" | 10.50" | −0.8% | 59.5 mph | Compare |
| 265/80R15 | 31.69" | 10.43" | +1.4% | 60.9 mph | Compare |
| 235/85R15 | 30.73" | 9.25" | −1.6% | 59.0 mph | Compare |
| 285/70R15 | 30.71" | 11.22" | −1.7% | 59.0 mph | Compare |
| 285/75R15 | 31.83" | 11.22" | +1.9% | 61.1 mph | Compare |
| 265/75R15 | 30.65" | 10.43" | −1.9% | 58.9 mph | Compare |
| 32x11.50R15 | 32.00" | 11.50" | +2.4% | 61.5 mph | Compare |
| 245/80R15 | 30.43" | 9.65" | −2.6% | 58.4 mph | Compare |
| 255/85R15 | 32.07" | 10.04" | +2.6% | 61.6 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 325/40R21 | 21" | 31.24" | 0.0% | Compare |
| 335/35R22 | 22" | 31.23" | 0.0% | Compare |
| 235/50R22 | 22" | 31.25" | 0.0% | Compare |
| 345/45R19 | 19" | 31.22" | −0.1% | Compare |
| 285/50R20 | 20" | 31.22" | −0.1% | Compare |
| 305/55R18 | 18" | 31.21" | −0.1% | Compare |
| 305/30R24 | 24" | 31.20" | −0.1% | Compare |
| 225/75R18 | 18" | 31.29" | +0.2% | Compare |
| 295/40R22 | 22" | 31.29" | +0.2% | Compare |
| 335/50R18 | 18" | 31.19" | −0.2% | Compare |
| 355/40R20 | 20" | 31.18" | −0.2% | Compare |
| 235/55R21 | 21" | 31.18" | −0.2% | Compare |
One size up or down
- 265/75R15narrower: 30.6" × 10.4"
- 285/75R15wider: 31.8" × 11.2"
- 275/70R15lower profile: 30.2" × 10.8"
- 275/80R15taller sidewall: 32.3" × 10.8"
Compare 275/75R15 with another size
Questions
- How tall is a 275/75R15 tire?
- A 275/75R15 tire is 31.2 inches tall (794 mm), calculated from the size. It is 10.8 inches wide with 8.1 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 275/75R15 mean?
- 275/75R15 means a tire 275 mm wide, with sidewalls 75% as tall as the tire is wide (206 mm), radial construction (R), for a 15 inch wheel.
- How many revolutions per mile does a 275/75R15 tire make?
- About 646 revolutions per mile, based on a circumference of 98.1 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 275/75R15 tire?
- Roughly 7.5" to 9.0". Check the tire maker's approved rim range for the exact model before buying wheels.
- Can I use 245/85R15 instead of 275/75R15?
- 245/85R15 is +0.16 inches (+0.5%) in overall diameter, so at an indicated 60 mph you would be doing 60.3 mph. Differences under 3% are usually fine, but check clearance, load index and your vehicle's placard.