Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/80-14 | 170/60-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.34 (643.6) | 25.03 (635.8) | -0.31 (-7.8) -1.2% |
| Width inches (mm) | 7.09 (180) | 6.69 (170) | -0.39 (-10) -5.6% |
| Circum. inches (mm) | 79.6 (2021.93) | 78.64 (1997.42) | -0.96 (-24.5) -1.2% |
| Sidewall Height inches (mm) | 5.67 (144) | 4.02 (102) | -1.65 (-42) -29.2% |
| Revolutions per mile (km) | 795.94 (494.58) | 805.71 (500.64) | 9.76 (6.07) 1.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.76 mph (31.8 km/h) |
| 25 mph (40.23 km/h) | 24.7 mph (39.75 km/h) |
| 30 mph (48.28 km/h) | 29.64 mph (47.7 km/h) |
| 35 mph (56.33 km/h) | 34.58 mph (55.64 km/h) |
| 40 mph (64.37 km/h) | 39.52 mph (63.59 km/h) |
| 45 mph (72.42 km/h) | 44.45 mph (71.54 km/h) |
| 50 mph (80.47 km/h) | 49.39 mph (79.49 km/h) |
| 55 mph (88.51 km/h) | 54.33 mph (87.44 km/h) |
| 60 mph (96.56 km/h) | 59.27 mph (95.39 km/h) |
| 65 mph (104.61 km/h) | 64.21 mph (103.34 km/h) |
| 70 mph (112.65 km/h) | 69.15 mph (111.29 km/h) |
| 75 mph (120.7 km/h) | 74.09 mph (119.24 km/h) |
| 80 mph (128.75 km/h) | 79.03 mph (127.19 km/h) |
| 85 mph (136.79 km/h) | 83.97 mph (135.14 km/h) |
| 90 mph (144.84 km/h) | 88.91 mph (143.09 km/h) |
| 95 mph (152.89 km/h) | 93.85 mph (151.04 km/h) |
| 100 mph (160.93 km/h) | 98.79 mph (158.98 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
