285/45R15 tire size in inches
A 285/45R15 tire measures
25.1" tall × 11.2" wide
5.05" sidewall on a 15" wheel. 804 revolutions per mile.
285/45R15 means a tire 285 mm wide, with sidewalls 45% as tall as the tire is wide (128 mm), radial construction (R), for a 15 inch wheel.
285/45R15 specs
| Overall diameter (height) | 25.10 inches (637 mm) |
|---|---|
| Section width | 11.22 inches (285 mm) |
| Sidewall height | 5.05 inches (128 mm) |
| Wheel (rim) diameter | 15 inches |
| Circumference | 78.8 inches (2,003 mm) |
| Revolutions per mile | 804 |
| Revolutions per kilometer | 499 |
| Approximate rim width | 9.5" to 11.0" |
| In inches (flotation style) | 25.1x11.2R15 |
| Aspect ratio | 45% |
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 285/45R15 on a 15" wheel
These 15" sizes are within 3% of 285/45R15's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 215/60R15 | 25.16" | 8.46" | +0.2% | 60.1 mph | Compare |
| 255/50R15 | 25.04" | 10.04" | −0.2% | 59.9 mph | Compare |
| 235/55R15 | 25.18" | 9.25" | +0.3% | 60.2 mph | Compare |
| 185/70R15 | 25.20" | 7.28" | +0.4% | 60.2 mph | Compare |
| 195/65R15 | 24.98" | 7.68" | −0.5% | 59.7 mph | Compare |
| 175/75R15 | 25.33" | 6.89" | +0.9% | 60.6 mph | Compare |
| 165/80R15 | 25.39" | 6.50" | +1.2% | 60.7 mph | Compare |
| 265/50R15 | 25.43" | 10.43" | +1.3% | 60.8 mph | Compare |
| 165/75R15 | 24.74" | 6.50" | −1.4% | 59.2 mph | Compare |
| 225/55R15 | 24.74" | 8.86" | −1.4% | 59.2 mph | Compare |
| 275/45R15 | 24.74" | 10.83" | −1.4% | 59.2 mph | Compare |
| 205/65R15 | 25.49" | 8.07" | +1.6% | 60.9 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 235/60R14 | 14" | 25.10" | 0.0% | Compare |
| 205/75R13 | 13" | 25.11" | 0.0% | Compare |
| 225/40R18 | 18" | 25.09" | 0.0% | Compare |
| 215/30R20 | 20" | 25.08" | −0.1% | Compare |
| 205/50R17 | 17" | 25.07" | −0.1% | Compare |
| 295/35R17 | 17" | 25.13" | +0.1% | Compare |
| 165/85R14 | 14" | 25.04" | −0.2% | Compare |
| 255/55R14 | 14" | 25.04" | −0.2% | Compare |
| 255/45R16 | 16" | 25.04" | −0.3% | Compare |
| 255/40R17 | 17" | 25.03" | −0.3% | Compare |
| 235/65R13 | 13" | 25.03" | −0.3% | Compare |
| 255/35R18 | 18" | 25.03" | −0.3% | Compare |
One size up or down
Compare 285/45R15 with another size
Questions
- How tall is a 285/45R15 tire?
- A 285/45R15 tire is 25.1 inches tall (637 mm), calculated from the size. It is 11.2 inches wide with 5.0 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 285/45R15 mean?
- 285/45R15 means a tire 285 mm wide, with sidewalls 45% as tall as the tire is wide (128 mm), radial construction (R), for a 15 inch wheel.
- How many revolutions per mile does a 285/45R15 tire make?
- About 804 revolutions per mile, based on a circumference of 78.8 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 285/45R15 tire?
- Roughly 9.5" to 11.0". Check the tire maker's approved rim range for the exact model before buying wheels.
- Can I use 215/60R15 instead of 285/45R15?
- 215/60R15 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.