325/40R22 tire size in inches
A 325/40R22 tire measures
32.2" tall × 12.8" wide
5.12" sidewall on a 22" wheel. 626 revolutions per mile.
325/40R22 means a tire 325 mm wide, with sidewalls 40% as tall as the tire is wide (130 mm), radial construction (R), for a 22 inch wheel.
325/40R22 specs
| Overall diameter (height) | 32.24 inches (819 mm) |
|---|---|
| Section width | 12.80 inches (325 mm) |
| Sidewall height | 5.12 inches (130 mm) |
| Wheel (rim) diameter | 22 inches |
| Circumference | 101.3 inches (2,572 mm) |
| Revolutions per mile | 626 |
| Revolutions per kilometer | 389 |
| Approximate rim width | 10.5" to 12.0" |
| In inches (flotation style) | 32.2x12.8R22 |
| 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 325/40R22 on a 22" wheel
These 22" sizes are within 3% of 325/40R22's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 235/55R22 | 32.18" | 9.25" | −0.2% | 59.9 mph | Compare |
| 285/45R22 | 32.10" | 11.22" | −0.4% | 59.7 mph | Compare |
| 265/50R22 | 32.43" | 10.43" | +0.6% | 60.4 mph | Compare |
| 255/50R22 | 32.04" | 10.04" | −0.6% | 59.6 mph | Compare |
| 295/45R22 | 32.45" | 11.61" | +0.7% | 60.4 mph | Compare |
| 335/40R22 | 32.55" | 13.19" | +1.0% | 60.6 mph | Compare |
| 315/40R22 | 31.92" | 12.40" | −1.0% | 59.4 mph | Compare |
| 245/55R22 | 32.61" | 9.65" | +1.2% | 60.7 mph | Compare |
| 355/35R22 | 31.78" | 13.98" | −1.4% | 59.2 mph | Compare |
| 275/45R22 | 31.74" | 10.83" | −1.5% | 59.1 mph | Compare |
| 305/45R22 | 32.81" | 12.01" | +1.8% | 61.1 mph | Compare |
| 275/50R22 | 32.83" | 10.83" | +1.8% | 61.1 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 275/75R16 | 16" | 32.24" | 0.0% | Compare |
| 345/45R20 | 20" | 32.22" | 0.0% | Compare |
| 285/50R21 | 21" | 32.22" | 0.0% | Compare |
| 295/70R16 | 16" | 32.26" | +0.1% | Compare |
| 305/55R19 | 19" | 32.21" | −0.1% | Compare |
| 335/50R19 | 19" | 32.19" | −0.1% | Compare |
| 355/40R21 | 21" | 32.18" | −0.2% | Compare |
| 315/45R21 | 21" | 32.16" | −0.2% | Compare |
| 275/70R17 | 17" | 32.16" | −0.2% | Compare |
| 275/80R15 | 15" | 32.32" | +0.3% | Compare |
| 345/30R24 | 24" | 32.15" | −0.3% | Compare |
| 285/55R20 | 20" | 32.34" | +0.3% | Compare |
One size up or down
- 315/40R22narrower: 31.9" × 12.4"
- 335/40R22wider: 32.6" × 13.2"
- 325/35R22lower profile: 31.0" × 12.8"
- 325/45R22taller sidewall: 33.5" × 12.8"
Compare 325/40R22 with another size
Questions
- How tall is a 325/40R22 tire?
- A 325/40R22 tire is 32.2 inches tall (819 mm), calculated from the size. It is 12.8 inches wide with 5.1 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 325/40R22 mean?
- 325/40R22 means a tire 325 mm wide, with sidewalls 40% as tall as the tire is wide (130 mm), radial construction (R), for a 22 inch wheel.
- How many revolutions per mile does a 325/40R22 tire make?
- About 626 revolutions per mile, based on a circumference of 101.3 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 325/40R22 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 235/55R22 instead of 325/40R22?
- 235/55R22 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.