245/40R22 tire size in inches
A 245/40R22 tire measures
29.7" tall × 9.6" wide
3.86" sidewall on a 22" wheel. 679 revolutions per mile.
245/40R22 means a tire 245 mm wide, with sidewalls 40% as tall as the tire is wide (98 mm), radial construction (R), for a 22 inch wheel.
245/40R22 specs
| Overall diameter (height) | 29.72 inches (755 mm) |
|---|---|
| Section width | 9.65 inches (245 mm) |
| Sidewall height | 3.86 inches (98 mm) |
| Wheel (rim) diameter | 22 inches |
| Circumference | 93.4 inches (2,371 mm) |
| Revolutions per mile | 679 |
| Revolutions per kilometer | 422 |
| Approximate rim width | 8.0" to 9.5" |
| In inches (flotation style) | 29.7x9.6R22 |
| 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 245/40R22 on a 22" wheel
These 22" sizes are within 3% of 245/40R22's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 325/30R22 | 29.68" | 12.80" | −0.1% | 59.9 mph | Compare |
| 275/35R22 | 29.58" | 10.83" | −0.5% | 59.7 mph | Compare |
| 285/35R22 | 29.85" | 11.22" | +0.5% | 60.3 mph | Compare |
| 335/30R22 | 29.91" | 13.19" | +0.7% | 60.4 mph | Compare |
| 315/30R22 | 29.44" | 12.40" | −0.9% | 59.4 mph | Compare |
| 235/40R22 | 29.40" | 9.25" | −1.1% | 59.4 mph | Compare |
| 255/40R22 | 30.03" | 10.04" | +1.1% | 60.6 mph | Compare |
| 265/35R22 | 29.30" | 10.43" | −1.4% | 59.2 mph | Compare |
| 295/35R22 | 30.13" | 11.61" | +1.4% | 60.8 mph | Compare |
| 345/30R22 | 30.15" | 13.58" | +1.5% | 60.9 mph | Compare |
| 305/30R22 | 29.20" | 12.01" | −1.7% | 59.0 mph | Compare |
| 235/45R22 | 30.33" | 9.25" | +2.1% | 61.2 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 205/85R16 | 16" | 29.72" | 0.0% | Compare |
| 235/85R14 | 14" | 29.73" | 0.0% | Compare |
| 215/75R17 | 17" | 29.70" | −0.1% | Compare |
| 225/55R20 | 20" | 29.74" | +0.1% | Compare |
| 275/45R20 | 20" | 29.74" | +0.1% | Compare |
| 245/45R21 | 21" | 29.68" | −0.1% | Compare |
| 315/35R21 | 21" | 29.68" | −0.1% | Compare |
| 275/40R21 | 21" | 29.66" | −0.2% | Compare |
| 295/55R17 | 17" | 29.78" | +0.2% | Compare |
| 265/75R14 | 14" | 29.65" | −0.2% | Compare |
| 355/35R20 | 20" | 29.78" | +0.2% | Compare |
| 245/50R20 | 20" | 29.65" | −0.2% | Compare |
One size up or down
- 235/40R22narrower: 29.4" × 9.3"
- 255/40R22wider: 30.0" × 10.0"
- 245/35R22lower profile: 28.8" × 9.6"
- 245/45R22taller sidewall: 30.7" × 9.6"
Compare 245/40R22 with another size
Questions
- How tall is a 245/40R22 tire?
- A 245/40R22 tire is 29.7 inches tall (755 mm), calculated from the size. It is 9.6 inches wide with 3.9 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 245/40R22 mean?
- 245/40R22 means a tire 245 mm wide, with sidewalls 40% as tall as the tire is wide (98 mm), radial construction (R), for a 22 inch wheel.
- How many revolutions per mile does a 245/40R22 tire make?
- About 679 revolutions per mile, based on a circumference of 93.4 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 245/40R22 tire?
- Roughly 8.0" to 9.5". Check the tire maker's approved rim range for the exact model before buying wheels.
- Can I use 325/30R22 instead of 245/40R22?
- 325/30R22 is −0.04 inches (−0.1%) 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.