205/45R15 tire size in inches
A 205/45R15 tire measures
22.3" tall × 8.1" wide
3.63" sidewall on a 15" wheel. 906 revolutions per mile.
205/45R15 means a tire 205 mm wide, with sidewalls 45% as tall as the tire is wide (92 mm), radial construction (R), for a 15 inch wheel.
205/45R15 specs
| Overall diameter (height) | 22.26 inches (566 mm) |
|---|---|
| Section width | 8.07 inches (205 mm) |
| Sidewall height | 3.63 inches (92 mm) |
| Wheel (rim) diameter | 15 inches |
| Circumference | 69.9 inches (1,777 mm) |
| Revolutions per mile | 906 |
| Revolutions per kilometer | 563 |
| Approximate rim width | 6.5" to 8.0" |
| In inches (flotation style) | 22.3x8.1R15 |
| Aspect ratio | 45% |
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 205/45R15 on a 15" wheel
These 15" sizes are within 3% of 205/45R15's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 185/50R15 | 22.28" | 7.28" | +0.1% | 60.1 mph | Compare |
| 165/55R15 | 22.15" | 6.50" | −0.5% | 59.7 mph | Compare |
| 175/55R15 | 22.58" | 6.89" | +1.4% | 60.8 mph | Compare |
| 215/45R15 | 22.62" | 8.46" | +1.6% | 61.0 mph | Compare |
| 195/50R15 | 22.68" | 7.68" | +1.9% | 61.1 mph | Compare |
| 165/60R15 | 22.80" | 6.50" | +2.4% | 61.4 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 175/60R14 | 14" | 22.27" | 0.0% | Compare |
| 195/60R13 | 13" | 22.21" | −0.2% | Compare |
| 155/75R13 | 13" | 22.15" | −0.5% | Compare |
| 195/35R17 | 17" | 22.37" | +0.5% | Compare |
| 195/40R16 | 16" | 22.14" | −0.5% | Compare |
| 145/80R13 | 13" | 22.13" | −0.6% | Compare |
| 185/35R17 | 17" | 22.10" | −0.7% | Compare |
| 165/70R13 | 13" | 22.09" | −0.8% | Compare |
| 165/65R14 | 14" | 22.44" | +0.8% | Compare |
| 195/55R14 | 14" | 22.44" | +0.8% | Compare |
| 205/40R16 | 16" | 22.46" | +0.9% | Compare |
| 185/65R13 | 13" | 22.47" | +0.9% | Compare |
One size up or down
Compare 205/45R15 with another size
Questions
- How tall is a 205/45R15 tire?
- A 205/45R15 tire is 22.3 inches tall (566 mm), calculated from the size. It is 8.1 inches wide with 3.6 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 205/45R15 mean?
- 205/45R15 means a tire 205 mm wide, with sidewalls 45% as tall as the tire is wide (92 mm), radial construction (R), for a 15 inch wheel.
- How many revolutions per mile does a 205/45R15 tire make?
- About 906 revolutions per mile, based on a circumference of 69.9 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 205/45R15 tire?
- Roughly 6.5" to 8.0". Check the tire maker's approved rim range for the exact model before buying wheels.
- Can I use 185/50R15 instead of 205/45R15?
- 185/50R15 is +0.02 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.