285/55R15 tire size in inches
A 285/55R15 tire measures
27.3" tall × 11.2" wide
6.17" sidewall on a 15" wheel. 738 revolutions per mile.
285/55R15 means a tire 285 mm wide, with sidewalls 55% as tall as the tire is wide (157 mm), radial construction (R), for a 15 inch wheel.
285/55R15 specs
| Overall diameter (height) | 27.34 inches (695 mm) |
|---|---|
| Section width | 11.22 inches (285 mm) |
| Sidewall height | 6.17 inches (157 mm) |
| Wheel (rim) diameter | 15 inches |
| Circumference | 85.9 inches (2,182 mm) |
| Revolutions per mile | 738 |
| Revolutions per kilometer | 458 |
| Approximate rim width | 8.0" to 9.5" |
| In inches (flotation style) | 27.3x11.2R15 |
| Aspect ratio | 55% |
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 285/55R15 on a 15" wheel
These 15" sizes are within 3% of 285/55R15's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 185/85R15 | 27.38" | 7.28" | +0.1% | 60.1 mph | Compare |
| 195/80R15 | 27.28" | 7.68" | −0.2% | 59.9 mph | Compare |
| 225/70R15 | 27.40" | 8.86" | +0.2% | 60.1 mph | Compare |
| 265/60R15 | 27.52" | 10.43" | +0.6% | 60.4 mph | Compare |
| 245/65R15 | 27.54" | 9.65" | +0.7% | 60.4 mph | Compare |
| 205/75R15 | 27.11" | 8.07" | −0.9% | 59.5 mph | Compare |
| 255/60R15 | 27.05" | 10.04" | −1.1% | 59.4 mph | Compare |
| 235/65R15 | 27.03" | 9.25" | −1.2% | 59.3 mph | Compare |
| 215/75R15 | 27.70" | 8.46" | +1.3% | 60.8 mph | Compare |
| 275/55R15 | 26.91" | 10.83" | −1.6% | 59.0 mph | Compare |
| 215/70R15 | 26.85" | 8.46" | −1.8% | 58.9 mph | Compare |
| 205/80R15 | 27.91" | 8.07" | +2.1% | 61.3 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 265/40R19 | 19" | 27.35" | 0.0% | Compare |
| 235/45R19 | 19" | 27.33" | −0.1% | Compare |
| 215/55R18 | 18" | 27.31" | −0.1% | Compare |
| 265/35R20 | 20" | 27.30" | −0.1% | Compare |
| 205/70R16 | 16" | 27.30" | −0.2% | Compare |
| 355/30R19 | 19" | 27.39" | +0.2% | Compare |
| 215/85R13 | 13" | 27.39" | +0.2% | Compare |
| 265/45R18 | 18" | 27.39" | +0.2% | Compare |
| 295/40R18 | 18" | 27.29" | −0.2% | Compare |
| 225/75R14 | 14" | 27.29" | −0.2% | Compare |
| 325/25R21 | 21" | 27.40" | +0.2% | Compare |
| 235/40R20 | 20" | 27.40" | +0.2% | Compare |
One size up or down
- 275/55R15narrower: 26.9" × 10.8"
- 285/50R15lower profile: 26.2" × 11.2"
- 285/60R15taller sidewall: 28.5" × 11.2"
Compare 285/55R15 with another size
Questions
- How tall is a 285/55R15 tire?
- A 285/55R15 tire is 27.3 inches tall (695 mm), calculated from the size. It is 11.2 inches wide with 6.2 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 285/55R15 mean?
- 285/55R15 means a tire 285 mm wide, with sidewalls 55% as tall as the tire is wide (157 mm), radial construction (R), for a 15 inch wheel.
- How many revolutions per mile does a 285/55R15 tire make?
- About 738 revolutions per mile, based on a circumference of 85.9 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 285/55R15 tire?
- Roughly 8.0" to 9.5". Check the tire maker's approved rim range for the exact model before buying wheels.
- Can I use 185/85R15 instead of 285/55R15?
- 185/85R15 is +0.04 inches (+0.1%) 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.