205/85R15 tire size in inches
A 205/85R15 tire measures
28.7" tall × 8.1" wide
6.86" sidewall on a 15" wheel. 702 revolutions per mile.
205/85R15 means a tire 205 mm wide, with sidewalls 85% as tall as the tire is wide (174 mm), radial construction (R), for a 15 inch wheel.
205/85R15 specs
| Overall diameter (height) | 28.72 inches (730 mm) |
|---|---|
| Section width | 8.07 inches (205 mm) |
| Sidewall height | 6.86 inches (174 mm) |
| Wheel (rim) diameter | 15 inches |
| Circumference | 90.2 inches (2,292 mm) |
| Revolutions per mile | 702 |
| Revolutions per kilometer | 436 |
| Approximate rim width | 5.5" to 7.0" |
| In inches (flotation style) | 28.7x8.1R15 |
| 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 205/85R15 on a 15" wheel
These 15" sizes are within 3% of 205/85R15's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 235/75R15 | 28.88" | 9.25" | +0.5% | 60.3 mph | Compare |
| 265/65R15 | 28.56" | 10.43" | −0.5% | 59.7 mph | Compare |
| 215/80R15 | 28.54" | 8.46" | −0.6% | 59.6 mph | Compare |
| 245/70R15 | 28.50" | 9.65" | −0.8% | 59.5 mph | Compare |
| 285/60R15 | 28.46" | 11.22" | −0.9% | 59.5 mph | Compare |
| 255/70R15 | 29.06" | 10.04" | +1.2% | 60.7 mph | Compare |
| 275/65R15 | 29.07" | 10.83" | +1.2% | 60.7 mph | Compare |
| 225/75R15 | 28.29" | 8.86" | −1.5% | 59.1 mph | Compare |
| 225/80R15 | 29.17" | 8.86" | +1.6% | 60.9 mph | Compare |
| 195/85R15 | 28.05" | 7.68" | −2.3% | 58.6 mph | Compare |
| 255/65R15 | 28.05" | 10.04" | −2.3% | 58.6 mph | Compare |
| 215/85R15 | 29.39" | 8.46" | +2.3% | 61.4 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 245/40R21 | 21" | 28.72" | 0.0% | Compare |
| 235/85R13 | 13" | 28.73" | 0.0% | Compare |
| 285/30R22 | 22" | 28.73" | 0.0% | Compare |
| 215/75R16 | 16" | 28.70" | −0.1% | Compare |
| 225/55R19 | 19" | 28.74" | +0.1% | Compare |
| 275/45R19 | 19" | 28.74" | +0.1% | Compare |
| 195/70R18 | 18" | 28.75" | +0.1% | Compare |
| 245/35R22 | 22" | 28.75" | +0.1% | Compare |
| 205/60R19 | 19" | 28.69" | −0.1% | Compare |
| 245/45R20 | 20" | 28.68" | −0.1% | Compare |
| 315/35R20 | 20" | 28.68" | −0.1% | Compare |
| 325/30R21 | 21" | 28.68" | −0.2% | Compare |
One size up or down
Compare 205/85R15 with another size
Questions
- How tall is a 205/85R15 tire?
- A 205/85R15 tire is 28.7 inches tall (730 mm), calculated from the size. It is 8.1 inches wide with 6.9 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 205/85R15 mean?
- 205/85R15 means a tire 205 mm wide, with sidewalls 85% as tall as the tire is wide (174 mm), radial construction (R), for a 15 inch wheel.
- How many revolutions per mile does a 205/85R15 tire make?
- About 702 revolutions per mile, based on a circumference of 90.2 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 205/85R15 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 235/75R15 instead of 205/85R15?
- 235/75R15 is +0.16 inches (+0.5%) in overall diameter, so at an indicated 60 mph you would be doing 60.3 mph. Differences under 3% are usually fine, but check clearance, load index and your vehicle's placard.