Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 120/70-19 | 170/60-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.61 (650.6) | 25.03 (635.8) | -0.58 (-14.8) -2.3% |
| Width inches (mm) | 4.72 (120) | 6.69 (170) | 1.97 (50) 41.7% |
| Circum. inches (mm) | 80.47 (2043.92) | 78.64 (1997.42) | -1.83 (-46.5) -2.3% |
| Sidewall Height inches (mm) | 3.31 (84) | 4.02 (102) | 0.71 (18) 21.4% |
| Revolutions per mile (km) | 787.38 (489.25) | 805.71 (500.64) | 18.33 (11.39) 2.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.55 mph (31.45 km/h) |
| 25 mph (40.23 km/h) | 24.43 mph (39.32 km/h) |
| 30 mph (48.28 km/h) | 29.32 mph (47.18 km/h) |
| 35 mph (56.33 km/h) | 34.2 mph (55.05 km/h) |
| 40 mph (64.37 km/h) | 39.09 mph (62.91 km/h) |
| 45 mph (72.42 km/h) | 43.98 mph (70.77 km/h) |
| 50 mph (80.47 km/h) | 48.86 mph (78.64 km/h) |
| 55 mph (88.51 km/h) | 53.75 mph (86.5 km/h) |
| 60 mph (96.56 km/h) | 58.64 mph (94.36 km/h) |
| 65 mph (104.61 km/h) | 63.52 mph (102.23 km/h) |
| 70 mph (112.65 km/h) | 68.41 mph (110.09 km/h) |
| 75 mph (120.7 km/h) | 73.29 mph (117.96 km/h) |
| 80 mph (128.75 km/h) | 78.18 mph (125.82 km/h) |
| 85 mph (136.79 km/h) | 83.07 mph (133.68 km/h) |
| 90 mph (144.84 km/h) | 87.95 mph (141.55 km/h) |
| 95 mph (152.89 km/h) | 92.84 mph (149.41 km/h) |
| 100 mph (160.93 km/h) | 97.73 mph (157.27 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2050 | 2382 | 2565 | 2679 | 2801 | 2888 | 2984 | 3097 | 3254 | 3411 | 3586 | 3726 | 3979 | 4258 | 4476 | 4616 | 4694 | 4982 | 5383 | 6256 |
Better Fuel Economy Factory Ratios Increased Power
