215/85R15 tire size in inches
A 215/85R15 tire measures
29.4" tall × 8.5" wide
7.19" sidewall on a 15" wheel. 686 revolutions per mile.
215/85R15 means a tire 215 mm wide, with sidewalls 85% as tall as the tire is wide (183 mm), radial construction (R), for a 15 inch wheel.
215/85R15 specs
| Overall diameter (height) | 29.39 inches (747 mm) |
|---|---|
| Section width | 8.46 inches (215 mm) |
| Sidewall height | 7.19 inches (183 mm) |
| Wheel (rim) diameter | 15 inches |
| Circumference | 92.3 inches (2,345 mm) |
| Revolutions per mile | 686 |
| Revolutions per kilometer | 426 |
| Approximate rim width | 5.5" to 7.0" |
| In inches (flotation style) | 29.4x8.5R15 |
| Aspect ratio | 85% |
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 215/85R15 on a 15" wheel
These 15" sizes are within 3% of 215/85R15's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 245/75R15 | 29.47" | 9.65" | +0.3% | 60.2 mph | Compare |
| 285/65R15 | 29.59" | 11.22" | +0.7% | 60.4 mph | Compare |
| 225/80R15 | 29.17" | 8.86" | −0.7% | 59.6 mph | Compare |
| 265/70R15 | 29.61" | 10.43" | +0.7% | 60.4 mph | Compare |
| 275/65R15 | 29.07" | 10.83" | −1.1% | 59.4 mph | Compare |
| 255/70R15 | 29.06" | 10.04" | −1.1% | 59.3 mph | Compare |
| 235/80R15 | 29.80" | 9.25" | +1.4% | 60.8 mph | Compare |
| 235/75R15 | 28.88" | 9.25" | −1.7% | 59.0 mph | Compare |
| 30x9.50R15 | 30.00" | 9.50" | +2.1% | 61.2 mph | Compare |
| 205/85R15 | 28.72" | 8.07" | −2.3% | 58.6 mph | Compare |
| 225/85R15 | 30.06" | 8.86" | +2.3% | 61.4 mph | Compare |
| 255/75R15 | 30.06" | 10.04" | +2.3% | 61.4 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 265/45R20 | 20" | 29.39" | 0.0% | Compare |
| 355/30R21 | 21" | 29.39" | 0.0% | Compare |
| 245/85R13 | 13" | 29.40" | 0.0% | Compare |
| 225/70R17 | 17" | 29.40" | 0.0% | Compare |
| 235/40R22 | 22" | 29.40" | 0.0% | Compare |
| 315/50R17 | 17" | 29.40" | 0.0% | Compare |
| 305/35R21 | 21" | 29.41" | +0.1% | Compare |
| 275/25R24 | 24" | 29.41" | +0.1% | Compare |
| 245/80R14 | 14" | 29.43" | +0.1% | Compare |
| 265/50R19 | 19" | 29.43" | +0.1% | Compare |
| 265/40R21 | 21" | 29.35" | −0.1% | Compare |
| 285/55R17 | 17" | 29.34" | −0.2% | Compare |
One size up or down
Compare 215/85R15 with another size
Questions
- How tall is a 215/85R15 tire?
- A 215/85R15 tire is 29.4 inches tall (747 mm), calculated from the size. It is 8.5 inches wide with 7.2 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 215/85R15 mean?
- 215/85R15 means a tire 215 mm wide, with sidewalls 85% as tall as the tire is wide (183 mm), radial construction (R), for a 15 inch wheel.
- How many revolutions per mile does a 215/85R15 tire make?
- About 686 revolutions per mile, based on a circumference of 92.3 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 215/85R15 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 245/75R15 instead of 215/85R15?
- 245/75R15 is +0.08 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.