Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 355/25-21 | 355/40-22.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.99 (710.9) | 33.68 (855.5) | 5.69 (144.6) 20.3% |
| Width inches (mm) | 13.98 (355) | 13.98 (355) | 0 (0) 0% |
| Circum. inches (mm) | 87.93 (2233.36) | 105.81 (2687.63) | 17.88 (454.27) 20.3% |
| Sidewall Height inches (mm) | 3.49 (88.75) | 5.59 (142) | 2.1 (53.25) 60% |
| Revolutions per mile (km) | 720.59 (447.76) | 598.8 (372.07) | -121.8 (-75.68) -16.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.07 mph (38.73 km/h) |
| 25 mph (40.23 km/h) | 30.09 mph (48.42 km/h) |
| 30 mph (48.28 km/h) | 36.1 mph (58.1 km/h) |
| 35 mph (56.33 km/h) | 42.12 mph (67.78 km/h) |
| 40 mph (64.37 km/h) | 48.14 mph (77.47 km/h) |
| 45 mph (72.42 km/h) | 54.15 mph (87.15 km/h) |
| 50 mph (80.47 km/h) | 60.17 mph (96.83 km/h) |
| 55 mph (88.51 km/h) | 66.19 mph (106.52 km/h) |
| 60 mph (96.56 km/h) | 72.2 mph (116.2 km/h) |
| 65 mph (104.61 km/h) | 78.22 mph (125.89 km/h) |
| 70 mph (112.65 km/h) | 84.24 mph (135.57 km/h) |
| 75 mph (120.7 km/h) | 90.26 mph (145.25 km/h) |
| 80 mph (128.75 km/h) | 96.27 mph (154.94 km/h) |
| 85 mph (136.79 km/h) | 102.29 mph (164.62 km/h) |
| 90 mph (144.84 km/h) | 108.31 mph (174.3 km/h) |
| 95 mph (152.89 km/h) | 114.32 mph (183.99 km/h) |
| 100 mph (160.93 km/h) | 120.34 mph (193.67 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1524 | 1770 | 1906 | 1991 | 2081 | 2146 | 2218 | 2302 | 2419 | 2535 | 2665 | 2769 | 2957 | 3164 | 3326 | 3430 | 3489 | 3703 | 4001 | 4649 |
Better Fuel Economy Factory Ratios Increased Power
