235/45R15 tire size in inches
A 235/45R15 tire measures
23.3" tall × 9.3" wide
4.16" sidewall on a 15" wheel. 865 revolutions per mile.
235/45R15 means a tire 235 mm wide, with sidewalls 45% as tall as the tire is wide (106 mm), radial construction (R), for a 15 inch wheel.
235/45R15 specs
| Overall diameter (height) | 23.33 inches (593 mm) |
|---|---|
| Section width | 9.25 inches (235 mm) |
| Sidewall height | 4.16 inches (106 mm) |
| Wheel (rim) diameter | 15 inches |
| Circumference | 73.3 inches (1,861 mm) |
| Revolutions per mile | 865 |
| Revolutions per kilometer | 537 |
| Approximate rim width | 7.5" to 9.0" |
| In inches (flotation style) | 23.3x9.3R15 |
| 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 235/45R15 on a 15" wheel
These 15" sizes are within 3% of 235/45R15's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 175/60R15 | 23.27" | 6.89" | −0.3% | 59.8 mph | Compare |
| 165/65R15 | 23.44" | 6.50" | +0.5% | 60.3 mph | Compare |
| 195/55R15 | 23.44" | 7.68" | +0.5% | 60.3 mph | Compare |
| 215/50R15 | 23.46" | 8.46" | +0.6% | 60.4 mph | Compare |
| 205/50R15 | 23.07" | 8.07" | −1.1% | 59.3 mph | Compare |
| 185/55R15 | 23.01" | 7.28" | −1.4% | 59.2 mph | Compare |
| 225/45R15 | 22.97" | 8.86" | −1.5% | 59.1 mph | Compare |
| 245/45R15 | 23.68" | 9.65" | +1.5% | 60.9 mph | Compare |
| 185/60R15 | 23.74" | 7.28" | +1.8% | 61.1 mph | Compare |
| 165/60R15 | 22.80" | 6.50" | −2.3% | 58.6 mph | Compare |
| 225/50R15 | 23.86" | 8.86" | +2.3% | 61.4 mph | Compare |
| 205/55R15 | 23.88" | 8.07" | +2.4% | 61.4 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 175/75R13 | 13" | 23.33" | 0.0% | Compare |
| 215/55R14 | 14" | 23.31" | −0.1% | Compare |
| 185/50R16 | 16" | 23.28" | −0.2% | Compare |
| 155/85R13 | 13" | 23.37" | +0.2% | Compare |
| 195/35R18 | 18" | 23.37" | +0.2% | Compare |
| 205/45R16 | 16" | 23.26" | −0.3% | Compare |
| 165/80R13 | 13" | 23.39" | +0.3% | Compare |
| 235/40R16 | 16" | 23.40" | +0.3% | Compare |
| 215/25R19 | 19" | 23.23" | −0.4% | Compare |
| 225/25R19 | 19" | 23.43" | +0.4% | Compare |
| 195/60R14 | 14" | 23.21" | −0.5% | Compare |
| 225/35R17 | 17" | 23.20" | −0.5% | Compare |
One size up or down
Compare 235/45R15 with another size
Questions
- How tall is a 235/45R15 tire?
- A 235/45R15 tire is 23.3 inches tall (593 mm), calculated from the size. It is 9.3 inches wide with 4.2 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 235/45R15 mean?
- 235/45R15 means a tire 235 mm wide, with sidewalls 45% as tall as the tire is wide (106 mm), radial construction (R), for a 15 inch wheel.
- How many revolutions per mile does a 235/45R15 tire make?
- About 865 revolutions per mile, based on a circumference of 73.3 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 235/45R15 tire?
- Roughly 7.5" to 9.0". Check the tire maker's approved rim range for the exact model before buying wheels.
- Can I use 175/60R15 instead of 235/45R15?
- 175/60R15 is −0.06 inches (−0.3%) in overall diameter, so at an indicated 60 mph you would be doing 59.8 mph. Differences under 3% are usually fine, but check clearance, load index and your vehicle's placard.