Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/70-17 | 125/45-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.99 (634.8) | 21.43 (544.3) | -3.56 (-90.5) -14.3% |
| Width inches (mm) | 5.71 (145) | 4.92 (125) | -0.79 (-20) -13.8% |
| Circum. inches (mm) | 78.52 (1994.28) | 67.32 (1709.97) | -11.19 (-284.31) -14.3% |
| Sidewall Height inches (mm) | 4 (101.5) | 2.21 (56.25) | -1.78 (-45.25) -44.6% |
| Revolutions per mile (km) | 806.98 (501.43) | 941.15 (584.8) | 134.18 (83.37) 16.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.15 mph (27.6 km/h) |
| 25 mph (40.23 km/h) | 21.44 mph (34.5 km/h) |
| 30 mph (48.28 km/h) | 25.72 mph (41.4 km/h) |
| 35 mph (56.33 km/h) | 30.01 mph (48.3 km/h) |
| 40 mph (64.37 km/h) | 34.3 mph (55.2 km/h) |
| 45 mph (72.42 km/h) | 38.58 mph (62.1 km/h) |
| 50 mph (80.47 km/h) | 42.87 mph (69 km/h) |
| 55 mph (88.51 km/h) | 47.16 mph (75.9 km/h) |
| 60 mph (96.56 km/h) | 51.45 mph (82.79 km/h) |
| 65 mph (104.61 km/h) | 55.73 mph (89.69 km/h) |
| 70 mph (112.65 km/h) | 60.02 mph (96.59 km/h) |
| 75 mph (120.7 km/h) | 64.31 mph (103.49 km/h) |
| 80 mph (128.75 km/h) | 68.59 mph (110.39 km/h) |
| 85 mph (136.79 km/h) | 72.88 mph (117.29 km/h) |
| 90 mph (144.84 km/h) | 77.17 mph (124.19 km/h) |
| 95 mph (152.89 km/h) | 81.46 mph (131.09 km/h) |
| 100 mph (160.93 km/h) | 85.74 mph (137.99 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
