285/60R20 tire size in inches
A 285/60R20 tire measures
33.5" tall × 11.2" wide
6.73" sidewall on a 20" wheel. 603 revolutions per mile.
285/60R20 means a tire 285 mm wide, with sidewalls 60% as tall as the tire is wide (171 mm), radial construction (R), for a 20 inch wheel.
285/60R20 specs
| Overall diameter (height) | 33.46 inches (850 mm) |
|---|---|
| Section width | 11.22 inches (285 mm) |
| Sidewall height | 6.73 inches (171 mm) |
| Wheel (rim) diameter | 20 inches |
| Circumference | 105.1 inches (2,670 mm) |
| Revolutions per mile | 603 |
| Revolutions per kilometer | 374 |
| Approximate rim width | 7.5" to 9.0" |
| In inches (flotation style) | 33.5x11.2R20 |
| Aspect ratio | 60% |
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 285/60R20 on a 20" wheel
These 20" sizes are within 3% of 285/60R20's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 265/65R20 | 33.56" | 10.43" | +0.3% | 60.2 mph | Compare |
| 345/50R20 | 33.58" | 13.58" | +0.4% | 60.2 mph | Compare |
| 315/55R20 | 33.64" | 12.40" | +0.5% | 60.3 mph | Compare |
| 305/55R20 | 33.21" | 12.01" | −0.8% | 59.5 mph | Compare |
| 335/50R20 | 33.19" | 13.19" | −0.8% | 59.5 mph | Compare |
| 255/65R20 | 33.05" | 10.04" | −1.2% | 59.3 mph | Compare |
| 33x12.50R20 | 33.00" | 12.50" | −1.4% | 59.2 mph | Compare |
| 275/60R20 | 32.99" | 10.83" | −1.4% | 59.2 mph | Compare |
| 295/60R20 | 33.94" | 11.61" | +1.4% | 60.8 mph | Compare |
| 355/50R20 | 33.98" | 13.98" | +1.5% | 60.9 mph | Compare |
| 275/65R20 | 34.07" | 10.83" | +1.8% | 61.1 mph | Compare |
| 325/55R20 | 34.07" | 12.80" | +1.8% | 61.1 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 265/55R22 | 22" | 33.48" | 0.0% | Compare |
| 295/75R16 | 16" | 33.42" | −0.1% | Compare |
| 335/55R19 | 19" | 33.51" | +0.1% | Compare |
| 345/35R24 | 24" | 33.51" | +0.1% | Compare |
| 325/45R22 | 22" | 33.52" | +0.2% | Compare |
| 305/60R19 | 19" | 33.41" | −0.2% | Compare |
| 275/85R15 | 15" | 33.41" | −0.2% | Compare |
| 315/50R21 | 21" | 33.40" | −0.2% | Compare |
| 325/60R18 | 18" | 33.35" | −0.3% | Compare |
| 355/45R21 | 21" | 33.58" | +0.3% | Compare |
| 285/65R19 | 19" | 33.59" | +0.4% | Compare |
| 285/55R21 | 21" | 33.34" | −0.4% | Compare |
One size up or down
- 275/60R20narrower: 33.0" × 10.8"
- 295/60R20wider: 33.9" × 11.6"
- 285/55R20lower profile: 32.3" × 11.2"
- 285/65R20taller sidewall: 34.6" × 11.2"
Compare 285/60R20 with another size
Questions
- How tall is a 285/60R20 tire?
- A 285/60R20 tire is 33.5 inches tall (850 mm), calculated from the size. It is 11.2 inches wide with 6.7 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 285/60R20 mean?
- 285/60R20 means a tire 285 mm wide, with sidewalls 60% as tall as the tire is wide (171 mm), radial construction (R), for a 20 inch wheel.
- How many revolutions per mile does a 285/60R20 tire make?
- About 603 revolutions per mile, based on a circumference of 105.1 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 285/60R20 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 265/65R20 instead of 285/60R20?
- 265/65R20 is +0.10 inches (+0.3%) in overall diameter, so at an indicated 60 mph you would be doing 60.2 mph. Differences under 3% are usually fine, but check clearance, load index and your vehicle's placard.