305/45R22 tire size in inches
A 305/45R22 tire measures
32.8" tall × 12.0" wide
5.40" sidewall on a 22" wheel. 615 revolutions per mile.
305/45R22 means a tire 305 mm wide, with sidewalls 45% as tall as the tire is wide (137 mm), radial construction (R), for a 22 inch wheel.
305/45R22 specs
| Overall diameter (height) | 32.81 inches (833 mm) |
|---|---|
| Section width | 12.01 inches (305 mm) |
| Sidewall height | 5.40 inches (137 mm) |
| Wheel (rim) diameter | 22 inches |
| Circumference | 103.1 inches (2,618 mm) |
| Revolutions per mile | 615 |
| Revolutions per kilometer | 382 |
| Approximate rim width | 10.0" to 11.5" |
| In inches (flotation style) | 32.8x12.0R22 |
| 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 305/45R22 on a 22" wheel
These 22" sizes are within 3% of 305/45R22's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 275/50R22 | 32.83" | 10.83" | +0.1% | 60.0 mph | Compare |
| 345/40R22 | 32.87" | 13.58" | +0.2% | 60.1 mph | Compare |
| 33x12.50R22 | 33.00" | 12.50" | +0.6% | 60.4 mph | Compare |
| 245/55R22 | 32.61" | 9.65" | −0.6% | 59.6 mph | Compare |
| 255/55R22 | 33.04" | 10.04" | +0.7% | 60.4 mph | Compare |
| 335/40R22 | 32.55" | 13.19" | −0.8% | 59.5 mph | Compare |
| 315/45R22 | 33.16" | 12.40" | +1.1% | 60.6 mph | Compare |
| 295/45R22 | 32.45" | 11.61" | −1.1% | 59.4 mph | Compare |
| 265/50R22 | 32.43" | 10.43" | −1.1% | 59.3 mph | Compare |
| 355/40R22 | 33.18" | 13.98" | +1.1% | 60.7 mph | Compare |
| 285/50R22 | 33.22" | 11.22" | +1.3% | 60.8 mph | Compare |
| 325/40R22 | 32.24" | 12.80" | −1.7% | 59.0 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 325/50R20 | 20" | 32.80" | 0.0% | Compare |
| 285/75R16 | 16" | 32.83" | +0.1% | Compare |
| 295/55R20 | 20" | 32.78" | −0.1% | Compare |
| 335/45R21 | 21" | 32.87" | +0.2% | Compare |
| 265/85R15 | 15" | 32.74" | −0.2% | Compare |
| 315/60R18 | 18" | 32.88" | +0.2% | Compare |
| 285/70R17 | 17" | 32.71" | −0.3% | Compare |
| 275/55R21 | 21" | 32.91" | +0.3% | Compare |
| 265/80R16 | 16" | 32.69" | −0.3% | Compare |
| 315/35R24 | 24" | 32.68" | −0.4% | Compare |
| 295/60R19 | 19" | 32.94" | +0.4% | Compare |
| 285/80R15 | 15" | 32.95" | +0.4% | Compare |
One size up or down
- 295/45R22narrower: 32.5" × 11.6"
- 315/45R22wider: 33.2" × 12.4"
- 305/40R22lower profile: 31.6" × 12.0"
- 305/50R22taller sidewall: 34.0" × 12.0"
Compare 305/45R22 with another size
Questions
- How tall is a 305/45R22 tire?
- A 305/45R22 tire is 32.8 inches tall (833 mm), calculated from the size. It is 12.0 inches wide with 5.4 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 305/45R22 mean?
- 305/45R22 means a tire 305 mm wide, with sidewalls 45% as tall as the tire is wide (137 mm), radial construction (R), for a 22 inch wheel.
- How many revolutions per mile does a 305/45R22 tire make?
- About 615 revolutions per mile, based on a circumference of 103.1 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 305/45R22 tire?
- Roughly 10.0" to 11.5". Check the tire maker's approved rim range for the exact model before buying wheels.
- Can I use 275/50R22 instead of 305/45R22?
- 275/50R22 is +0.02 inches (+0.1%) in overall diameter, so at an indicated 60 mph you would be doing 60.0 mph. Differences under 3% are usually fine, but check clearance, load index and your vehicle's placard.