Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/60-17 | 170/60-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.5 (647.8) | 25.03 (635.8) | -0.47 (-12) -1.9% |
| Width inches (mm) | 7.09 (180) | 6.69 (170) | -0.39 (-10) -5.6% |
| Circum. inches (mm) | 80.12 (2035.12) | 78.64 (1997.42) | -1.48 (-37.7) -1.9% |
| Sidewall Height inches (mm) | 4.25 (108) | 4.02 (102) | -0.24 (-6) -5.6% |
| Revolutions per mile (km) | 790.78 (491.37) | 805.71 (500.64) | 14.93 (9.27) 1.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.63 mph (31.59 km/h) |
| 25 mph (40.23 km/h) | 24.54 mph (39.49 km/h) |
| 30 mph (48.28 km/h) | 29.44 mph (47.39 km/h) |
| 35 mph (56.33 km/h) | 34.35 mph (55.28 km/h) |
| 40 mph (64.37 km/h) | 39.26 mph (63.18 km/h) |
| 45 mph (72.42 km/h) | 44.17 mph (71.08 km/h) |
| 50 mph (80.47 km/h) | 49.07 mph (78.98 km/h) |
| 55 mph (88.51 km/h) | 53.98 mph (86.87 km/h) |
| 60 mph (96.56 km/h) | 58.89 mph (94.77 km/h) |
| 65 mph (104.61 km/h) | 63.8 mph (102.67 km/h) |
| 70 mph (112.65 km/h) | 68.7 mph (110.57 km/h) |
| 75 mph (120.7 km/h) | 73.61 mph (118.47 km/h) |
| 80 mph (128.75 km/h) | 78.52 mph (126.36 km/h) |
| 85 mph (136.79 km/h) | 83.43 mph (134.26 km/h) |
| 90 mph (144.84 km/h) | 88.33 mph (142.16 km/h) |
| 95 mph (152.89 km/h) | 93.24 mph (150.06 km/h) |
| 100 mph (160.93 km/h) | 98.15 mph (157.95 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
