305/40R24 tire size in inches
A 305/40R24 tire measures
33.6" tall × 12.0" wide
4.80" sidewall on a 24" wheel. 600 revolutions per mile.
305/40R24 means a tire 305 mm wide, with sidewalls 40% as tall as the tire is wide (122 mm), radial construction (R), for a 24 inch wheel.
305/40R24 specs
| Overall diameter (height) | 33.61 inches (854 mm) |
|---|---|
| Section width | 12.01 inches (305 mm) |
| Sidewall height | 4.80 inches (122 mm) |
| Wheel (rim) diameter | 24 inches |
| Circumference | 105.6 inches (2,682 mm) |
| Revolutions per mile | 600 |
| Revolutions per kilometer | 373 |
| Approximate rim width | 10.0" to 11.5" |
| In inches (flotation style) | 33.6x12.0R24 |
| 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 305/40R24 on a 24" wheel
These 24" sizes are within 3% of 305/40R24's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 345/35R24 | 33.51" | 13.58" | −0.3% | 59.8 mph | Compare |
| 355/35R24 | 33.78" | 13.98" | +0.5% | 60.3 mph | Compare |
| 295/40R24 | 33.29" | 11.61" | −0.9% | 59.4 mph | Compare |
| 315/40R24 | 33.92" | 12.40" | +0.9% | 60.6 mph | Compare |
| 335/35R24 | 33.23" | 13.19" | −1.1% | 59.3 mph | Compare |
| 325/40R24 | 34.24" | 12.80" | +1.9% | 61.1 mph | Compare |
| 285/40R24 | 32.98" | 11.22" | −1.9% | 58.9 mph | Compare |
| 325/35R24 | 32.96" | 12.80" | −1.9% | 58.8 mph | Compare |
| 315/35R24 | 32.68" | 12.40" | −2.8% | 58.3 mph | Compare |
| 335/40R24 | 34.55" | 13.19" | +2.8% | 61.7 mph | Compare |
| 275/40R24 | 32.66" | 10.83" | −2.8% | 58.3 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 305/65R18 | 18" | 33.61" | 0.0% | Compare |
| 295/50R22 | 22" | 33.61" | 0.0% | Compare |
| 285/65R19 | 19" | 33.59" | −0.1% | Compare |
| 345/50R20 | 20" | 33.58" | −0.1% | Compare |
| 355/45R21 | 21" | 33.58" | −0.1% | Compare |
| 315/55R20 | 20" | 33.64" | +0.1% | Compare |
| 265/75R18 | 18" | 33.65" | +0.1% | Compare |
| 265/65R20 | 20" | 33.56" | −0.1% | Compare |
| 325/45R22 | 22" | 33.52" | −0.3% | Compare |
| 335/55R19 | 19" | 33.51" | −0.3% | Compare |
| 285/70R18 | 18" | 33.71" | +0.3% | Compare |
| 265/85R16 | 16" | 33.74" | +0.4% | Compare |
One size up or down
Compare 305/40R24 with another size
Questions
- How tall is a 305/40R24 tire?
- A 305/40R24 tire is 33.6 inches tall (854 mm), calculated from the size. It is 12.0 inches wide with 4.8 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 305/40R24 mean?
- 305/40R24 means a tire 305 mm wide, with sidewalls 40% as tall as the tire is wide (122 mm), radial construction (R), for a 24 inch wheel.
- How many revolutions per mile does a 305/40R24 tire make?
- About 600 revolutions per mile, based on a circumference of 105.6 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 305/40R24 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 345/35R24 instead of 305/40R24?
- 345/35R24 is −0.10 inches (−0.3%) in overall diameter, so at an indicated 60 mph you would be doing 59.8 mph. Differences under 3% are usually fine, but check clearance, load index and your vehicle's placard.