255/45R22 tire size in inches
A 255/45R22 tire measures
31.0" tall × 10.0" wide
4.52" sidewall on a 22" wheel. 650 revolutions per mile.
255/45R22 means a tire 255 mm wide, with sidewalls 45% as tall as the tire is wide (115 mm), radial construction (R), for a 22 inch wheel.
255/45R22 specs
| Overall diameter (height) | 31.04 inches (788 mm) |
|---|---|
| Section width | 10.04 inches (255 mm) |
| Sidewall height | 4.52 inches (115 mm) |
| Wheel (rim) diameter | 22 inches |
| Circumference | 97.5 inches (2,477 mm) |
| Revolutions per mile | 650 |
| Revolutions per kilometer | 404 |
| Approximate rim width | 8.5" to 10.0" |
| In inches (flotation style) | 31.0x10.0R22 |
| 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 255/45R22 on a 22" wheel
These 22" sizes are within 3% of 255/45R22's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 285/40R22 | 30.98" | 11.22" | −0.2% | 59.9 mph | Compare |
| 325/35R22 | 30.96" | 12.80" | −0.3% | 59.8 mph | Compare |
| 335/35R22 | 31.23" | 13.19" | +0.6% | 60.4 mph | Compare |
| 235/50R22 | 31.25" | 9.25" | +0.7% | 60.4 mph | Compare |
| 295/40R22 | 31.29" | 11.61" | +0.8% | 60.5 mph | Compare |
| 245/45R22 | 30.68" | 9.65" | −1.1% | 59.3 mph | Compare |
| 315/35R22 | 30.68" | 12.40" | −1.1% | 59.3 mph | Compare |
| 265/45R22 | 31.39" | 10.43" | +1.1% | 60.7 mph | Compare |
| 275/40R22 | 30.66" | 10.83" | −1.2% | 59.3 mph | Compare |
| 345/35R22 | 31.51" | 13.58" | +1.5% | 60.9 mph | Compare |
| 305/40R22 | 31.61" | 12.01" | +1.8% | 61.1 mph | Compare |
| 245/50R22 | 31.65" | 9.65" | +2.0% | 61.2 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 255/50R21 | 21" | 31.04" | 0.0% | Compare |
| 235/65R19 | 19" | 31.03" | 0.0% | Compare |
| 255/35R24 | 24" | 31.03" | 0.0% | Compare |
| 255/55R20 | 20" | 31.04" | 0.0% | Compare |
| 255/60R19 | 19" | 31.05" | 0.0% | Compare |
| 255/65R18 | 18" | 31.05" | +0.1% | Compare |
| 255/70R17 | 17" | 31.06" | +0.1% | Compare |
| 225/85R16 | 16" | 31.06" | +0.1% | Compare |
| 255/75R16 | 16" | 31.06" | +0.1% | Compare |
| 255/80R15 | 15" | 31.06" | +0.1% | Compare |
| 305/50R19 | 19" | 31.01" | −0.1% | Compare |
| 215/65R20 | 20" | 31.00" | −0.1% | Compare |
One size up or down
- 245/45R22narrower: 30.7" × 9.6"
- 265/45R22wider: 31.4" × 10.4"
- 255/40R22lower profile: 30.0" × 10.0"
- 255/50R22taller sidewall: 32.0" × 10.0"
Compare 255/45R22 with another size
Questions
- How tall is a 255/45R22 tire?
- A 255/45R22 tire is 31.0 inches tall (788 mm), calculated from the size. It is 10.0 inches wide with 4.5 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 255/45R22 mean?
- 255/45R22 means a tire 255 mm wide, with sidewalls 45% as tall as the tire is wide (115 mm), radial construction (R), for a 22 inch wheel.
- How many revolutions per mile does a 255/45R22 tire make?
- About 650 revolutions per mile, based on a circumference of 97.5 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 255/45R22 tire?
- Roughly 8.5" to 10.0". Check the tire maker's approved rim range for the exact model before buying wheels.
- Can I use 285/40R22 instead of 255/45R22?
- 285/40R22 is −0.06 inches (−0.2%) in overall diameter, so at an indicated 60 mph you would be doing 59.9 mph. Differences under 3% are usually fine, but check clearance, load index and your vehicle's placard.