175/55R15 tire size in inches
A 175/55R15 tire measures
22.6" tall × 6.9" wide
3.79" sidewall on a 15" wheel. 893 revolutions per mile.
175/55R15 means a tire 175 mm wide, with sidewalls 55% as tall as the tire is wide (96 mm), radial construction (R), for a 15 inch wheel.
175/55R15 specs
| Overall diameter (height) | 22.58 inches (574 mm) |
|---|---|
| Section width | 6.89 inches (175 mm) |
| Sidewall height | 3.79 inches (96 mm) |
| Wheel (rim) diameter | 15 inches |
| Circumference | 70.9 inches (1,802 mm) |
| Revolutions per mile | 893 |
| Revolutions per kilometer | 555 |
| Approximate rim width | 5.0" to 6.5" |
| In inches (flotation style) | 22.6x6.9R15 |
| Aspect ratio | 55% |
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 175/55R15 on a 15" wheel
These 15" sizes are within 3% of 175/55R15's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 215/45R15 | 22.62" | 8.46" | +0.2% | 60.1 mph | Compare |
| 195/50R15 | 22.68" | 7.68" | +0.4% | 60.3 mph | Compare |
| 165/60R15 | 22.80" | 6.50" | +1.0% | 60.6 mph | Compare |
| 185/50R15 | 22.28" | 7.28" | −1.3% | 59.2 mph | Compare |
| 205/45R15 | 22.26" | 8.07" | −1.4% | 59.2 mph | Compare |
| 225/45R15 | 22.97" | 8.86" | +1.7% | 61.0 mph | Compare |
| 165/55R15 | 22.15" | 6.50" | −1.9% | 58.8 mph | Compare |
| 185/55R15 | 23.01" | 7.28" | +1.9% | 61.2 mph | Compare |
| 205/50R15 | 23.07" | 8.07" | +2.2% | 61.3 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 185/45R16 | 16" | 22.56" | −0.1% | Compare |
| 155/70R14 | 14" | 22.54" | −0.2% | Compare |
| 175/70R13 | 13" | 22.65" | +0.3% | Compare |
| 205/35R17 | 17" | 22.65" | +0.3% | Compare |
| 205/60R13 | 13" | 22.69" | +0.5% | Compare |
| 185/65R13 | 13" | 22.47" | −0.5% | Compare |
| 205/40R16 | 16" | 22.46" | −0.5% | Compare |
| 145/85R13 | 13" | 22.70" | +0.6% | Compare |
| 165/65R14 | 14" | 22.44" | −0.6% | Compare |
| 195/55R14 | 14" | 22.44" | −0.6% | Compare |
| 185/60R14 | 14" | 22.74" | +0.7% | Compare |
| 165/75R13 | 13" | 22.74" | +0.7% | Compare |
One size up or down
Compare 175/55R15 with another size
Questions
- How tall is a 175/55R15 tire?
- A 175/55R15 tire is 22.6 inches tall (574 mm), calculated from the size. It is 6.9 inches wide with 3.8 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 175/55R15 mean?
- 175/55R15 means a tire 175 mm wide, with sidewalls 55% as tall as the tire is wide (96 mm), radial construction (R), for a 15 inch wheel.
- How many revolutions per mile does a 175/55R15 tire make?
- About 893 revolutions per mile, based on a circumference of 70.9 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 175/55R15 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 215/45R15 instead of 175/55R15?
- 215/45R15 is +0.04 inches (+0.2%) 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.