Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/45-20 | 355/40-22 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.81 (782.5) | 33.18 (842.8) | 2.37 (60.3) 7.7% |
| Width inches (mm) | 12.01 (305) | 13.98 (355) | 1.97 (50) 16.4% |
| Circum. inches (mm) | 96.78 (2458.3) | 104.24 (2647.73) | 7.46 (189.44) 7.7% |
| Sidewall Height inches (mm) | 5.4 (137.25) | 5.59 (142) | 0.19 (4.75) 3.5% |
| Revolutions per mile (km) | 654.66 (406.79) | 607.82 (377.68) | -46.84 (-29.1) -7.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.54 mph (34.67 km/h) |
| 25 mph (40.23 km/h) | 26.93 mph (43.33 km/h) |
| 30 mph (48.28 km/h) | 32.31 mph (52 km/h) |
| 35 mph (56.33 km/h) | 37.7 mph (60.67 km/h) |
| 40 mph (64.37 km/h) | 43.08 mph (69.33 km/h) |
| 45 mph (72.42 km/h) | 48.47 mph (78 km/h) |
| 50 mph (80.47 km/h) | 53.85 mph (86.67 km/h) |
| 55 mph (88.51 km/h) | 59.24 mph (95.34 km/h) |
| 60 mph (96.56 km/h) | 64.62 mph (104 km/h) |
| 65 mph (104.61 km/h) | 70.01 mph (112.67 km/h) |
| 70 mph (112.65 km/h) | 75.39 mph (121.34 km/h) |
| 75 mph (120.7 km/h) | 80.78 mph (130 km/h) |
| 80 mph (128.75 km/h) | 86.16 mph (138.67 km/h) |
| 85 mph (136.79 km/h) | 91.55 mph (147.34 km/h) |
| 90 mph (144.84 km/h) | 96.94 mph (156 km/h) |
| 95 mph (152.89 km/h) | 102.32 mph (164.67 km/h) |
| 100 mph (160.93 km/h) | 107.71 mph (173.34 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1547 | 1797 | 1935 | 2021 | 2113 | 2179 | 2251 | 2337 | 2455 | 2574 | 2705 | 2811 | 3001 | 3212 | 3377 | 3482 | 3541 | 3758 | 4061 | 4719 |
Better Fuel Economy Factory Ratios Increased Power
