Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 345/25-20 | 345/25-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.79 (680.5) | 25.79 (655.1) | -1 (-25.4) -3.7% |
| Width inches (mm) | 13.58 (345) | 13.58 (345) | 0 (0) 0% |
| Circum. inches (mm) | 84.17 (2137.85) | 81.03 (2058.06) | -3.14 (-79.8) -3.7% |
| Sidewall Height inches (mm) | 3.4 (86.25) | 3.4 (86.25) | 0 (0) 0% |
| Revolutions per mile (km) | 752.78 (467.76) | 781.97 (485.89) | 29.19 (18.14) 3.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.25 mph (30.99 km/h) |
| 25 mph (40.23 km/h) | 24.07 mph (38.73 km/h) |
| 30 mph (48.28 km/h) | 28.88 mph (46.48 km/h) |
| 35 mph (56.33 km/h) | 33.69 mph (54.22 km/h) |
| 40 mph (64.37 km/h) | 38.51 mph (61.97 km/h) |
| 45 mph (72.42 km/h) | 43.32 mph (69.72 km/h) |
| 50 mph (80.47 km/h) | 48.13 mph (77.46 km/h) |
| 55 mph (88.51 km/h) | 52.95 mph (85.21 km/h) |
| 60 mph (96.56 km/h) | 57.76 mph (92.96 km/h) |
| 65 mph (104.61 km/h) | 62.57 mph (100.7 km/h) |
| 70 mph (112.65 km/h) | 67.39 mph (108.45 km/h) |
| 75 mph (120.7 km/h) | 72.2 mph (116.2 km/h) |
| 80 mph (128.75 km/h) | 77.01 mph (123.94 km/h) |
| 85 mph (136.79 km/h) | 81.83 mph (131.69 km/h) |
| 90 mph (144.84 km/h) | 86.64 mph (139.43 km/h) |
| 95 mph (152.89 km/h) | 91.45 mph (147.18 km/h) |
| 100 mph (160.93 km/h) | 96.27 mph (154.93 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1990 | 2312 | 2490 | 2600 | 2718 | 2803 | 2896 | 3006 | 3159 | 3311 | 3480 | 3616 | 3861 | 4132 | 4344 | 4480 | 4556 | 4835 | 5225 | 6072 |
Better Fuel Economy Factory Ratios Increased Power
