225/85R13 tire size in inches
A 225/85R13 tire measures
28.1" tall × 8.9" wide
7.53" sidewall on a 13" wheel. 719 revolutions per mile.
225/85R13 means a tire 225 mm wide, with sidewalls 85% as tall as the tire is wide (191 mm), radial construction (R), for a 13 inch wheel.
225/85R13 specs
| Overall diameter (height) | 28.06 inches (713 mm) |
|---|---|
| Section width | 8.86 inches (225 mm) |
| Sidewall height | 7.53 inches (191 mm) |
| Wheel (rim) diameter | 13 inches |
| Circumference | 88.2 inches (2,239 mm) |
| Revolutions per mile | 719 |
| Revolutions per kilometer | 447 |
| Approximate rim width | 6.0" to 7.5" |
| In inches (flotation style) | 28.1x8.9R13 |
| 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 225/85R13 on a 13" wheel
These 13" sizes are within 3% of 225/85R13's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 235/80R13 | 27.80" | 9.25" | −0.9% | 59.5 mph | Compare |
| 245/80R13 | 28.43" | 9.65" | +1.3% | 60.8 mph | Compare |
| 245/75R13 | 27.47" | 9.65" | −2.1% | 58.7 mph | Compare |
| 215/85R13 | 27.39" | 8.46" | −2.4% | 58.6 mph | Compare |
| 235/85R13 | 28.73" | 9.25" | +2.4% | 61.4 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 255/70R14 | 14" | 28.06" | 0.0% | Compare |
| 195/85R15 | 15" | 28.05" | 0.0% | Compare |
| 255/65R15 | 15" | 28.05" | 0.0% | Compare |
| 255/60R16 | 16" | 28.05" | 0.0% | Compare |
| 255/55R17 | 17" | 28.04" | −0.1% | Compare |
| 255/50R18 | 18" | 28.04" | −0.1% | Compare |
| 255/45R19 | 19" | 28.04" | −0.1% | Compare |
| 225/40R21 | 21" | 28.09" | +0.1% | Compare |
| 255/40R20 | 20" | 28.03" | −0.1% | Compare |
| 235/65R16 | 16" | 28.03" | −0.1% | Compare |
| 255/35R21 | 21" | 28.03" | −0.1% | Compare |
| 255/30R22 | 22" | 28.02" | −0.1% | Compare |
One size up or down
Compare 225/85R13 with another size
Questions
- How tall is a 225/85R13 tire?
- A 225/85R13 tire is 28.1 inches tall (713 mm), calculated from the size. It is 8.9 inches wide with 7.5 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 225/85R13 mean?
- 225/85R13 means a tire 225 mm wide, with sidewalls 85% as tall as the tire is wide (191 mm), radial construction (R), for a 13 inch wheel.
- How many revolutions per mile does a 225/85R13 tire make?
- About 719 revolutions per mile, based on a circumference of 88.2 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 225/85R13 tire?
- Roughly 6.0" to 7.5". Check the tire maker's approved rim range for the exact model before buying wheels.
- Can I use 235/80R13 instead of 225/85R13?
- 235/80R13 is −0.26 inches (−0.9%) in overall diameter, so at an indicated 60 mph you would be doing 59.5 mph. Differences under 3% are usually fine, but check clearance, load index and your vehicle's placard.