315/40R22 tire size in inches
A 315/40R22 tire measures
31.9" tall × 12.4" wide
4.96" sidewall on a 22" wheel. 632 revolutions per mile.
315/40R22 means a tire 315 mm wide, with sidewalls 40% as tall as the tire is wide (126 mm), radial construction (R), for a 22 inch wheel.
315/40R22 specs
| Overall diameter (height) | 31.92 inches (811 mm) |
|---|---|
| Section width | 12.40 inches (315 mm) |
| Sidewall height | 4.96 inches (126 mm) |
| Wheel (rim) diameter | 22 inches |
| Circumference | 100.3 inches (2,547 mm) |
| Revolutions per mile | 632 |
| Revolutions per kilometer | 393 |
| Approximate rim width | 10.5" to 12.0" |
| In inches (flotation style) | 31.9x12.4R22 |
| 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 315/40R22 on a 22" wheel
These 22" sizes are within 3% of 315/40R22's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 255/50R22 | 32.04" | 10.04" | +0.4% | 60.2 mph | Compare |
| 355/35R22 | 31.78" | 13.98" | −0.4% | 59.7 mph | Compare |
| 275/45R22 | 31.74" | 10.83" | −0.6% | 59.7 mph | Compare |
| 285/45R22 | 32.10" | 11.22" | +0.6% | 60.3 mph | Compare |
| 235/55R22 | 32.18" | 9.25" | +0.8% | 60.5 mph | Compare |
| 245/50R22 | 31.65" | 9.65" | −0.9% | 59.5 mph | Compare |
| 305/40R22 | 31.61" | 12.01" | −1.0% | 59.4 mph | Compare |
| 325/40R22 | 32.24" | 12.80" | +1.0% | 60.6 mph | Compare |
| 345/35R22 | 31.51" | 13.58" | −1.3% | 59.2 mph | Compare |
| 265/50R22 | 32.43" | 10.43" | +1.6% | 61.0 mph | Compare |
| 295/45R22 | 32.45" | 11.61" | +1.7% | 61.0 mph | Compare |
| 265/45R22 | 31.39" | 10.43" | −1.7% | 59.0 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 335/30R24 | 24" | 31.91" | 0.0% | Compare |
| 275/55R20 | 20" | 31.91" | 0.0% | Compare |
| 295/60R18 | 18" | 31.94" | 0.0% | Compare |
| 315/60R17 | 17" | 31.88" | −0.1% | Compare |
| 235/75R18 | 18" | 31.88" | −0.1% | Compare |
| 335/45R20 | 20" | 31.87" | −0.2% | Compare |
| 345/40R21 | 21" | 31.87" | −0.2% | Compare |
| 285/35R24 | 24" | 31.85" | −0.2% | Compare |
| 275/60R19 | 19" | 31.99" | +0.2% | Compare |
| 32x11.50R15 | 15" | 32.00" | +0.2% | Compare |
| 305/50R20 | 20" | 32.01" | +0.3% | Compare |
| 285/75R15 | 15" | 31.83" | −0.3% | Compare |
One size up or down
- 305/40R22narrower: 31.6" × 12.0"
- 325/40R22wider: 32.2" × 12.8"
- 315/35R22lower profile: 30.7" × 12.4"
- 315/45R22taller sidewall: 33.2" × 12.4"
Compare 315/40R22 with another size
Questions
- How tall is a 315/40R22 tire?
- A 315/40R22 tire is 31.9 inches tall (811 mm), calculated from the size. It is 12.4 inches wide with 5.0 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 315/40R22 mean?
- 315/40R22 means a tire 315 mm wide, with sidewalls 40% as tall as the tire is wide (126 mm), radial construction (R), for a 22 inch wheel.
- How many revolutions per mile does a 315/40R22 tire make?
- About 632 revolutions per mile, based on a circumference of 100.3 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 315/40R22 tire?
- Roughly 10.5" to 12.0". Check the tire maker's approved rim range for the exact model before buying wheels.
- Can I use 255/50R22 instead of 315/40R22?
- 255/50R22 is +0.12 inches (+0.4%) 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.