Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 120/70-17 | 140/75-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.61 (599.8) | 25.27 (641.8) | 1.65 (42) 7% |
| Width inches (mm) | 4.72 (120) | 5.51 (140) | 0.79 (20) 16.7% |
| Circum. inches (mm) | 74.19 (1884.33) | 79.38 (2016.27) | 5.19 (131.95) 7% |
| Sidewall Height inches (mm) | 3.31 (84) | 4.13 (105) | 0.83 (21) 25% |
| Revolutions per mile (km) | 854.07 (530.69) | 798.18 (495.96) | -55.89 (-34.73) -6.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.4 mph (34.44 km/h) |
| 25 mph (40.23 km/h) | 26.75 mph (43.05 km/h) |
| 30 mph (48.28 km/h) | 32.1 mph (51.66 km/h) |
| 35 mph (56.33 km/h) | 37.45 mph (60.27 km/h) |
| 40 mph (64.37 km/h) | 42.8 mph (68.88 km/h) |
| 45 mph (72.42 km/h) | 48.15 mph (77.49 km/h) |
| 50 mph (80.47 km/h) | 53.5 mph (86.1 km/h) |
| 55 mph (88.51 km/h) | 58.85 mph (94.71 km/h) |
| 60 mph (96.56 km/h) | 64.2 mph (103.32 km/h) |
| 65 mph (104.61 km/h) | 69.55 mph (111.93 km/h) |
| 70 mph (112.65 km/h) | 74.9 mph (120.54 km/h) |
| 75 mph (120.7 km/h) | 80.25 mph (129.15 km/h) |
| 80 mph (128.75 km/h) | 85.6 mph (137.76 km/h) |
| 85 mph (136.79 km/h) | 90.95 mph (146.37 km/h) |
| 90 mph (144.84 km/h) | 96.3 mph (154.98 km/h) |
| 95 mph (152.89 km/h) | 101.65 mph (163.59 km/h) |
| 100 mph (160.93 km/h) | 107 mph (172.2 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2031 | 2360 | 2541 | 2654 | 2775 | 2861 | 2956 | 3068 | 3224 | 3380 | 3552 | 3691 | 3941 | 4218 | 4434 | 4572 | 4650 | 4935 | 5333 | 6197 |
Better Fuel Economy Factory Ratios Increased Power
