255/40R22 tire size in inches
A 255/40R22 tire measures
30.0" tall × 10.0" wide
4.02" sidewall on a 22" wheel. 672 revolutions per mile.
255/40R22 means a tire 255 mm wide, with sidewalls 40% as tall as the tire is wide (102 mm), radial construction (R), for a 22 inch wheel.
255/40R22 specs
| Overall diameter (height) | 30.03 inches (763 mm) |
|---|---|
| Section width | 10.04 inches (255 mm) |
| Sidewall height | 4.02 inches (102 mm) |
| Wheel (rim) diameter | 22 inches |
| Circumference | 94.3 inches (2,396 mm) |
| Revolutions per mile | 672 |
| Revolutions per kilometer | 417 |
| Approximate rim width | 8.5" to 10.0" |
| In inches (flotation style) | 30.0x10.0R22 |
| Aspect ratio | 40% |
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 255/40R22 on a 22" wheel
These 22" sizes are within 3% of 255/40R22's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 295/35R22 | 30.13" | 11.61" | +0.3% | 60.2 mph | Compare |
| 335/30R22 | 29.91" | 13.19" | −0.4% | 59.8 mph | Compare |
| 345/30R22 | 30.15" | 13.58" | +0.4% | 60.2 mph | Compare |
| 285/35R22 | 29.85" | 11.22" | −0.6% | 59.6 mph | Compare |
| 235/45R22 | 30.33" | 9.25" | +1.0% | 60.6 mph | Compare |
| 245/40R22 | 29.72" | 9.65" | −1.0% | 59.4 mph | Compare |
| 265/40R22 | 30.35" | 10.43" | +1.0% | 60.6 mph | Compare |
| 325/30R22 | 29.68" | 12.80" | −1.2% | 59.3 mph | Compare |
| 355/30R22 | 30.39" | 13.98" | +1.2% | 60.7 mph | Compare |
| 305/35R22 | 30.41" | 12.01" | +1.2% | 60.7 mph | Compare |
| 275/35R22 | 29.58" | 10.83" | −1.5% | 59.1 mph | Compare |
| 315/30R22 | 29.44" | 12.40" | −2.0% | 58.8 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 235/65R18 | 18" | 30.03" | 0.0% | Compare |
| 255/45R21 | 21" | 30.04" | 0.0% | Compare |
| 255/50R20 | 20" | 30.04" | 0.0% | Compare |
| 255/30R24 | 24" | 30.02" | 0.0% | Compare |
| 255/55R19 | 19" | 30.04" | 0.0% | Compare |
| 255/60R18 | 18" | 30.05" | +0.1% | Compare |
| 255/65R17 | 17" | 30.05" | +0.1% | Compare |
| 255/70R16 | 16" | 30.06" | +0.1% | Compare |
| 305/50R18 | 18" | 30.01" | −0.1% | Compare |
| 215/65R19 | 19" | 30.00" | −0.1% | Compare |
| 225/85R15 | 15" | 30.06" | +0.1% | Compare |
| 255/75R15 | 15" | 30.06" | +0.1% | Compare |
One size up or down
- 245/40R22narrower: 29.7" × 9.6"
- 265/40R22wider: 30.3" × 10.4"
- 255/35R22lower profile: 29.0" × 10.0"
- 255/45R22taller sidewall: 31.0" × 10.0"
Compare 255/40R22 with another size
Questions
- How tall is a 255/40R22 tire?
- A 255/40R22 tire is 30.0 inches tall (763 mm), calculated from the size. It is 10.0 inches wide with 4.0 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 255/40R22 mean?
- 255/40R22 means a tire 255 mm wide, with sidewalls 40% as tall as the tire is wide (102 mm), radial construction (R), for a 22 inch wheel.
- How many revolutions per mile does a 255/40R22 tire make?
- About 672 revolutions per mile, based on a circumference of 94.3 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 255/40R22 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 295/35R22 instead of 255/40R22?
- 295/35R22 is +0.10 inches (+0.3%) in overall diameter, so at an indicated 60 mph you would be doing 60.2 mph. Differences under 3% are usually fine, but check clearance, load index and your vehicle's placard.