285/35R20 tire size in inches
A 285/35R20 tire measures
27.9" tall × 11.2" wide
3.93" sidewall on a 20" wheel. 724 revolutions per mile.
285/35R20 means a tire 285 mm wide, with sidewalls 35% as tall as the tire is wide (100 mm), radial construction (R), for a 20 inch wheel.
285/35R20 specs
| Overall diameter (height) | 27.85 inches (708 mm) |
|---|---|
| Section width | 11.22 inches (285 mm) |
| Sidewall height | 3.93 inches (100 mm) |
| Wheel (rim) diameter | 20 inches |
| Circumference | 87.5 inches (2,223 mm) |
| Revolutions per mile | 724 |
| Revolutions per kilometer | 450 |
| Approximate rim width | 9.5" to 11.0" |
| In inches (flotation style) | 27.9x11.2R20 |
| Aspect ratio | 35% |
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 285/35R20 on a 20" wheel
These 20" sizes are within 3% of 285/35R20's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 335/30R20 | 27.91" | 13.19" | +0.2% | 60.1 mph | Compare |
| 225/45R20 | 27.97" | 8.86" | +0.4% | 60.3 mph | Compare |
| 245/40R20 | 27.72" | 9.65" | −0.5% | 59.7 mph | Compare |
| 255/40R20 | 28.03" | 10.04" | +0.6% | 60.4 mph | Compare |
| 325/30R20 | 27.68" | 12.80" | −0.6% | 59.6 mph | Compare |
| 215/45R20 | 27.62" | 8.46" | −0.8% | 59.5 mph | Compare |
| 295/35R20 | 28.13" | 11.61" | +1.0% | 60.6 mph | Compare |
| 275/35R20 | 27.58" | 10.83" | −1.0% | 59.4 mph | Compare |
| 345/30R20 | 28.15" | 13.58" | +1.1% | 60.6 mph | Compare |
| 315/30R20 | 27.44" | 12.40" | −1.5% | 59.1 mph | Compare |
| 235/40R20 | 27.40" | 9.25" | −1.6% | 59.0 mph | Compare |
| 235/45R20 | 28.33" | 9.25" | +1.7% | 61.0 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 225/50R19 | 19" | 27.86" | 0.0% | Compare |
| 215/70R16 | 16" | 27.85" | 0.0% | Compare |
| 205/55R19 | 19" | 27.88" | +0.1% | Compare |
| 235/75R14 | 14" | 27.88" | +0.1% | Compare |
| 275/50R17 | 17" | 27.83" | −0.1% | Compare |
| 295/25R22 | 22" | 27.81" | −0.2% | Compare |
| 305/45R17 | 17" | 27.81" | −0.2% | Compare |
| 235/80R13 | 13" | 27.80" | −0.2% | Compare |
| 275/55R16 | 16" | 27.91" | +0.2% | Compare |
| 205/80R15 | 15" | 27.91" | +0.2% | Compare |
| 345/25R21 | 21" | 27.79" | −0.2% | Compare |
| 315/40R18 | 18" | 27.92" | +0.2% | Compare |
One size up or down
- 275/35R20narrower: 27.6" × 10.8"
- 295/35R20wider: 28.1" × 11.6"
- 285/30R20lower profile: 26.7" × 11.2"
- 285/40R20taller sidewall: 29.0" × 11.2"
Compare 285/35R20 with another size
Questions
- How tall is a 285/35R20 tire?
- A 285/35R20 tire is 27.9 inches tall (708 mm), calculated from the size. It is 11.2 inches wide with 3.9 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 285/35R20 mean?
- 285/35R20 means a tire 285 mm wide, with sidewalls 35% as tall as the tire is wide (100 mm), radial construction (R), for a 20 inch wheel.
- How many revolutions per mile does a 285/35R20 tire make?
- About 724 revolutions per mile, based on a circumference of 87.5 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 285/35R20 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 335/30R20 instead of 285/35R20?
- 335/30R20 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.