215/65R20 tire size in inches
A 215/65R20 tire measures
31.0" tall × 8.5" wide
5.50" sidewall on a 20" wheel. 651 revolutions per mile.
215/65R20 means a tire 215 mm wide, with sidewalls 65% as tall as the tire is wide (140 mm), radial construction (R), for a 20 inch wheel.
215/65R20 specs
| Overall diameter (height) | 31.00 inches (787 mm) |
|---|---|
| Section width | 8.46 inches (215 mm) |
| Sidewall height | 5.50 inches (140 mm) |
| Wheel (rim) diameter | 20 inches |
| Circumference | 97.4 inches (2,474 mm) |
| Revolutions per mile | 651 |
| Revolutions per kilometer | 404 |
| Approximate rim width | 5.5" to 7.0" |
| In inches (flotation style) | 31.0x8.5R20 |
| Aspect ratio | 65% |
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 215/65R20 on a 20" wheel
These 20" sizes are within 3% of 215/65R20's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 255/55R20 | 31.04" | 10.04" | +0.1% | 60.1 mph | Compare |
| 235/60R20 | 31.10" | 9.25" | +0.3% | 60.2 mph | Compare |
| 345/40R20 | 30.87" | 13.58" | −0.4% | 59.7 mph | Compare |
| 315/45R20 | 31.16" | 12.40" | +0.5% | 60.3 mph | Compare |
| 275/50R20 | 30.83" | 10.83" | −0.6% | 59.7 mph | Compare |
| 355/40R20 | 31.18" | 13.98" | +0.6% | 60.3 mph | Compare |
| 305/45R20 | 30.81" | 12.01" | −0.6% | 59.6 mph | Compare |
| 285/50R20 | 31.22" | 11.22" | +0.7% | 60.4 mph | Compare |
| 225/60R20 | 30.63" | 8.86" | −1.2% | 59.3 mph | Compare |
| 245/55R20 | 30.61" | 9.65" | −1.3% | 59.2 mph | Compare |
| 335/40R20 | 30.55" | 13.19" | −1.5% | 59.1 mph | Compare |
| 265/55R20 | 31.48" | 10.43" | +1.5% | 60.9 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 31x10.50R15 | 15" | 31.00" | 0.0% | Compare |
| 305/50R19 | 19" | 31.01" | 0.0% | Compare |
| 275/60R18 | 18" | 30.99" | 0.0% | Compare |
| 355/25R24 | 24" | 30.99" | −0.1% | Compare |
| 235/65R19 | 19" | 31.03" | +0.1% | Compare |
| 255/35R24 | 24" | 31.03" | +0.1% | Compare |
| 285/40R22 | 22" | 30.98" | −0.1% | Compare |
| 255/45R22 | 22" | 31.04" | +0.1% | Compare |
| 255/50R21 | 21" | 31.04" | +0.1% | Compare |
| 295/30R24 | 24" | 30.97" | −0.1% | Compare |
| 255/60R19 | 19" | 31.05" | +0.1% | Compare |
| 325/35R22 | 22" | 30.96" | −0.2% | Compare |
One size up or down
Compare 215/65R20 with another size
Questions
- How tall is a 215/65R20 tire?
- A 215/65R20 tire is 31.0 inches tall (787 mm), calculated from the size. It is 8.5 inches wide with 5.5 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 215/65R20 mean?
- 215/65R20 means a tire 215 mm wide, with sidewalls 65% as tall as the tire is wide (140 mm), radial construction (R), for a 20 inch wheel.
- How many revolutions per mile does a 215/65R20 tire make?
- About 651 revolutions per mile, based on a circumference of 97.4 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 215/65R20 tire?
- Roughly 5.5" to 7.0". Check the tire maker's approved rim range for the exact model before buying wheels.
- Can I use 255/55R20 instead of 215/65R20?
- 255/55R20 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.