255/30R24 tire size in inches
A 255/30R24 tire measures
30.0" tall × 10.0" wide
3.01" sidewall on a 24" wheel. 672 revolutions per mile.
255/30R24 means a tire 255 mm wide, with sidewalls 30% as tall as the tire is wide (77 mm), radial construction (R), for a 24 inch wheel.
255/30R24 specs
| Overall diameter (height) | 30.02 inches (763 mm) |
|---|---|
| Section width | 10.04 inches (255 mm) |
| Sidewall height | 3.01 inches (77 mm) |
| Wheel (rim) diameter | 24 inches |
| Circumference | 94.3 inches (2,396 mm) |
| Revolutions per mile | 672 |
| Revolutions per kilometer | 417 |
| Approximate rim width | 8.5" to 10.0" |
| In inches (flotation style) | 30.0x10.0R24 |
| Aspect ratio | 30% |
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 255/30R24 on a 24" wheel
These 24" sizes are within 3% of 255/30R24's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 305/25R24 | 30.00" | 12.01" | −0.1% | 60.0 mph | Compare |
| 315/25R24 | 30.20" | 12.40" | +0.6% | 60.4 mph | Compare |
| 295/25R24 | 29.81" | 11.61" | −0.7% | 59.6 mph | Compare |
| 265/30R24 | 30.26" | 10.43" | +0.8% | 60.5 mph | Compare |
| 325/25R24 | 30.40" | 12.80" | +1.2% | 60.7 mph | Compare |
| 285/25R24 | 29.61" | 11.22" | −1.4% | 59.2 mph | Compare |
| 275/30R24 | 30.50" | 10.83" | +1.6% | 60.9 mph | Compare |
| 335/25R24 | 30.59" | 13.19" | +1.9% | 61.1 mph | Compare |
| 275/25R24 | 29.41" | 10.83" | −2.0% | 58.8 mph | Compare |
| 285/30R24 | 30.73" | 11.22" | +2.4% | 61.4 mph | Compare |
| 345/25R24 | 30.79" | 13.58" | +2.6% | 61.5 mph | Compare |
| 265/25R24 | 29.22" | 10.43" | −2.7% | 58.4 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 235/65R18 | 18" | 30.03" | 0.0% | Compare |
| 255/40R22 | 22" | 30.03" | 0.0% | Compare |
| 255/45R21 | 21" | 30.04" | 0.0% | Compare |
| 255/50R20 | 20" | 30.04" | +0.1% | Compare |
| 305/50R18 | 18" | 30.01" | −0.1% | Compare |
| 255/55R19 | 19" | 30.04" | +0.1% | Compare |
| 215/65R19 | 19" | 30.00" | −0.1% | Compare |
| 255/60R18 | 18" | 30.05" | +0.1% | Compare |
| 30x9.50R15 | 15" | 30.00" | −0.1% | Compare |
| 255/65R17 | 17" | 30.05" | +0.1% | Compare |
| 255/70R16 | 16" | 30.06" | +0.1% | Compare |
| 275/60R17 | 17" | 29.99" | −0.1% | Compare |
One size up or down
- 265/30R24wider: 30.3" × 10.4"
- 255/25R24lower profile: 29.0" × 10.0"
- 255/35R24taller sidewall: 31.0" × 10.0"
Compare 255/30R24 with another size
Questions
- How tall is a 255/30R24 tire?
- A 255/30R24 tire is 30.0 inches tall (763 mm), calculated from the size. It is 10.0 inches wide with 3.0 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 255/30R24 mean?
- 255/30R24 means a tire 255 mm wide, with sidewalls 30% as tall as the tire is wide (77 mm), radial construction (R), for a 24 inch wheel.
- How many revolutions per mile does a 255/30R24 tire make?
- About 672 revolutions per mile, based on a circumference of 94.3 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 255/30R24 tire?
- Roughly 8.5" to 10.0". Check the tire maker's approved rim range for the exact model before buying wheels.
- Can I use 305/25R24 instead of 255/30R24?
- 305/25R24 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.