Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 345/25-20 | 365/20-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.79 (680.5) | 25.75 (654) | -1.04 (-26.5) -3.9% |
| Width inches (mm) | 13.58 (345) | 14.37 (365) | 0.79 (20) 5.8% |
| Circum. inches (mm) | 84.17 (2137.85) | 80.89 (2054.6) | -3.28 (-83.25) -3.9% |
| Sidewall Height inches (mm) | 3.4 (86.25) | 2.87 (73) | -0.52 (-13.25) -15.4% |
| Revolutions per mile (km) | 752.78 (467.76) | 783.29 (486.71) | 30.5 (18.95) 4.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.22 mph (30.93 km/h) |
| 25 mph (40.23 km/h) | 24.03 mph (38.67 km/h) |
| 30 mph (48.28 km/h) | 28.83 mph (46.4 km/h) |
| 35 mph (56.33 km/h) | 33.64 mph (54.13 km/h) |
| 40 mph (64.37 km/h) | 38.44 mph (61.87 km/h) |
| 45 mph (72.42 km/h) | 43.25 mph (69.6 km/h) |
| 50 mph (80.47 km/h) | 48.05 mph (77.33 km/h) |
| 55 mph (88.51 km/h) | 52.86 mph (85.07 km/h) |
| 60 mph (96.56 km/h) | 57.66 mph (92.8 km/h) |
| 65 mph (104.61 km/h) | 62.47 mph (100.53 km/h) |
| 70 mph (112.65 km/h) | 67.27 mph (108.27 km/h) |
| 75 mph (120.7 km/h) | 72.08 mph (116 km/h) |
| 80 mph (128.75 km/h) | 76.88 mph (123.73 km/h) |
| 85 mph (136.79 km/h) | 81.69 mph (131.47 km/h) |
| 90 mph (144.84 km/h) | 86.5 mph (139.2 km/h) |
| 95 mph (152.89 km/h) | 91.3 mph (146.93 km/h) |
| 100 mph (160.93 km/h) | 96.11 mph (154.67 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1993 | 2316 | 2494 | 2604 | 2723 | 2808 | 2901 | 3011 | 3164 | 3317 | 3486 | 3622 | 3868 | 4139 | 4351 | 4487 | 4563 | 4843 | 5234 | 6082 |
Better Fuel Economy Factory Ratios Increased Power
