Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 140/60-14 | 170/60-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.61 (523.6) | 25.03 (635.8) | 4.42 (112.2) 21.4% |
| Width inches (mm) | 5.51 (140) | 6.69 (170) | 1.18 (30) 21.4% |
| Circum. inches (mm) | 64.76 (1644.94) | 78.64 (1997.42) | 13.88 (352.49) 21.4% |
| Sidewall Height inches (mm) | 3.31 (84) | 4.02 (102) | 0.71 (18) 21.4% |
| Revolutions per mile (km) | 978.36 (607.92) | 805.71 (500.64) | -172.65 (-107.28) -17.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.29 mph (39.08 km/h) |
| 25 mph (40.23 km/h) | 30.36 mph (48.86 km/h) |
| 30 mph (48.28 km/h) | 36.43 mph (58.63 km/h) |
| 35 mph (56.33 km/h) | 42.5 mph (68.4 km/h) |
| 40 mph (64.37 km/h) | 48.57 mph (78.17 km/h) |
| 45 mph (72.42 km/h) | 54.64 mph (87.94 km/h) |
| 50 mph (80.47 km/h) | 60.71 mph (97.71 km/h) |
| 55 mph (88.51 km/h) | 66.79 mph (107.48 km/h) |
| 60 mph (96.56 km/h) | 72.86 mph (117.25 km/h) |
| 65 mph (104.61 km/h) | 78.93 mph (127.02 km/h) |
| 70 mph (112.65 km/h) | 85 mph (136.79 km/h) |
| 75 mph (120.7 km/h) | 91.07 mph (146.57 km/h) |
| 80 mph (128.75 km/h) | 97.14 mph (156.34 km/h) |
| 85 mph (136.79 km/h) | 103.21 mph (166.11 km/h) |
| 90 mph (144.84 km/h) | 109.29 mph (175.88 km/h) |
| 95 mph (152.89 km/h) | 115.36 mph (185.65 km/h) |
| 100 mph (160.93 km/h) | 121.43 mph (195.42 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
