Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 345/25-20 | 385/35-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.79 (680.5) | 30.61 (777.5) | 3.82 (97) 14.3% |
| Width inches (mm) | 13.58 (345) | 15.16 (385) | 1.57 (40) 11.6% |
| Circum. inches (mm) | 84.17 (2137.85) | 96.16 (2442.59) | 12 (304.73) 14.3% |
| Sidewall Height inches (mm) | 3.4 (86.25) | 5.31 (134.75) | 1.91 (48.5) 56.2% |
| Revolutions per mile (km) | 752.78 (467.76) | 658.87 (409.4) | -93.92 (-58.36) -12.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.85 mph (36.77 km/h) |
| 25 mph (40.23 km/h) | 28.56 mph (45.97 km/h) |
| 30 mph (48.28 km/h) | 34.28 mph (55.16 km/h) |
| 35 mph (56.33 km/h) | 39.99 mph (64.36 km/h) |
| 40 mph (64.37 km/h) | 45.7 mph (73.55 km/h) |
| 45 mph (72.42 km/h) | 51.41 mph (82.74 km/h) |
| 50 mph (80.47 km/h) | 57.13 mph (91.94 km/h) |
| 55 mph (88.51 km/h) | 62.84 mph (101.13 km/h) |
| 60 mph (96.56 km/h) | 68.55 mph (110.32 km/h) |
| 65 mph (104.61 km/h) | 74.27 mph (119.52 km/h) |
| 70 mph (112.65 km/h) | 79.98 mph (128.71 km/h) |
| 75 mph (120.7 km/h) | 85.69 mph (137.91 km/h) |
| 80 mph (128.75 km/h) | 91.4 mph (147.1 km/h) |
| 85 mph (136.79 km/h) | 97.12 mph (156.29 km/h) |
| 90 mph (144.84 km/h) | 102.83 mph (165.49 km/h) |
| 95 mph (152.89 km/h) | 108.54 mph (174.68 km/h) |
| 100 mph (160.93 km/h) | 114.25 mph (183.87 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1677 | 1948 | 2098 | 2190 | 2290 | 2362 | 2440 | 2533 | 2661 | 2790 | 2932 | 3047 | 3253 | 3482 | 3660 | 3774 | 3839 | 4074 | 4402 | 5116 |
Better Fuel Economy Factory Ratios Increased Power
