Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 355/25-21 | 355/30-24 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.99 (710.9) | 32.39 (822.6) | 4.4 (111.7) 15.7% |
| Width inches (mm) | 13.98 (355) | 13.98 (355) | 0 (0) 0% |
| Circum. inches (mm) | 87.93 (2233.36) | 101.74 (2584.27) | 13.82 (350.92) 15.7% |
| Sidewall Height inches (mm) | 3.49 (88.75) | 4.19 (106.5) | 0.7 (17.75) 20% |
| Revolutions per mile (km) | 720.59 (447.76) | 622.75 (386.96) | -97.85 (-60.8) -13.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.14 mph (37.24 km/h) |
| 25 mph (40.23 km/h) | 28.93 mph (46.56 km/h) |
| 30 mph (48.28 km/h) | 34.71 mph (55.87 km/h) |
| 35 mph (56.33 km/h) | 40.5 mph (65.18 km/h) |
| 40 mph (64.37 km/h) | 46.28 mph (74.49 km/h) |
| 45 mph (72.42 km/h) | 52.07 mph (83.8 km/h) |
| 50 mph (80.47 km/h) | 57.86 mph (93.11 km/h) |
| 55 mph (88.51 km/h) | 63.64 mph (102.42 km/h) |
| 60 mph (96.56 km/h) | 69.43 mph (111.73 km/h) |
| 65 mph (104.61 km/h) | 75.21 mph (121.04 km/h) |
| 70 mph (112.65 km/h) | 81 mph (130.36 km/h) |
| 75 mph (120.7 km/h) | 86.78 mph (139.67 km/h) |
| 80 mph (128.75 km/h) | 92.57 mph (148.98 km/h) |
| 85 mph (136.79 km/h) | 98.36 mph (158.29 km/h) |
| 90 mph (144.84 km/h) | 104.14 mph (167.6 km/h) |
| 95 mph (152.89 km/h) | 109.93 mph (176.91 km/h) |
| 100 mph (160.93 km/h) | 115.71 mph (186.22 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1585 | 1841 | 1983 | 2070 | 2165 | 2232 | 2306 | 2394 | 2515 | 2637 | 2772 | 2880 | 3075 | 3291 | 3460 | 3567 | 3628 | 3851 | 4161 | 4835 |
Better Fuel Economy Factory Ratios Increased Power
