185/85R13 tire size in inches
A 185/85R13 tire measures
25.4" tall × 7.3" wide
6.19" sidewall on a 13" wheel. 795 revolutions per mile.
185/85R13 means a tire 185 mm wide, with sidewalls 85% as tall as the tire is wide (157 mm), radial construction (R), for a 13 inch wheel.
185/85R13 specs
| Overall diameter (height) | 25.38 inches (645 mm) |
|---|---|
| Section width | 7.28 inches (185 mm) |
| Sidewall height | 6.19 inches (157 mm) |
| Wheel (rim) diameter | 13 inches |
| Circumference | 79.7 inches (2,025 mm) |
| Revolutions per mile | 795 |
| Revolutions per kilometer | 494 |
| Approximate rim width | 5.0" to 6.5" |
| In inches (flotation style) | 25.4x7.3R13 |
| 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 185/85R13 on a 13" wheel
These 13" sizes are within 3% of 185/85R13's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 225/70R13 | 25.40" | 8.86" | +0.1% | 60.0 mph | Compare |
| 195/80R13 | 25.28" | 7.68" | −0.4% | 59.8 mph | Compare |
| 245/65R13 | 25.54" | 9.65" | +0.6% | 60.4 mph | Compare |
| 205/75R13 | 25.11" | 8.07" | −1.1% | 59.3 mph | Compare |
| 215/75R13 | 25.70" | 8.46" | +1.2% | 60.7 mph | Compare |
| 235/65R13 | 25.03" | 9.25" | −1.4% | 59.2 mph | Compare |
| 205/80R13 | 25.91" | 8.07" | +2.1% | 61.3 mph | Compare |
| 215/70R13 | 24.85" | 8.46" | −2.1% | 58.7 mph | Compare |
| 235/70R13 | 25.95" | 9.25" | +2.2% | 61.3 mph | Compare |
| 175/85R13 | 24.71" | 6.89" | −2.6% | 58.4 mph | Compare |
| 195/85R13 | 26.05" | 7.68" | +2.6% | 61.6 mph | Compare |
| 185/80R13 | 24.65" | 7.28" | −2.9% | 58.3 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 265/45R16 | 16" | 25.39" | 0.0% | Compare |
| 165/80R15 | 15" | 25.39" | 0.0% | Compare |
| 325/25R19 | 19" | 25.40" | +0.1% | Compare |
| 235/40R18 | 18" | 25.40" | +0.1% | Compare |
| 305/35R17 | 17" | 25.41" | +0.1% | Compare |
| 275/25R20 | 20" | 25.41" | +0.1% | Compare |
| 265/40R17 | 17" | 25.35" | −0.1% | Compare |
| 175/75R15 | 15" | 25.33" | −0.2% | Compare |
| 225/25R21 | 21" | 25.43" | +0.2% | Compare |
| 265/50R15 | 15" | 25.43" | +0.2% | Compare |
| 235/45R17 | 17" | 25.33" | −0.2% | Compare |
| 195/55R17 | 17" | 25.44" | +0.2% | Compare |
One size up or down
Compare 185/85R13 with another size
Questions
- How tall is a 185/85R13 tire?
- A 185/85R13 tire is 25.4 inches tall (645 mm), calculated from the size. It is 7.3 inches wide with 6.2 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 185/85R13 mean?
- 185/85R13 means a tire 185 mm wide, with sidewalls 85% as tall as the tire is wide (157 mm), radial construction (R), for a 13 inch wheel.
- How many revolutions per mile does a 185/85R13 tire make?
- About 795 revolutions per mile, based on a circumference of 79.7 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 185/85R13 tire?
- Roughly 5.0" to 6.5". Check the tire maker's approved rim range for the exact model before buying wheels.
- Can I use 225/70R13 instead of 185/85R13?
- 225/70R13 is +0.02 inches (+0.1%) in overall diameter, so at an indicated 60 mph you would be doing 60.0 mph. Differences under 3% are usually fine, but check clearance, load index and your vehicle's placard.