Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/80-14 | 170/100-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.34 (643.6) | 27.39 (695.6) | 2.05 (52) 8.1% |
| Width inches (mm) | 7.09 (180) | 6.69 (170) | -0.39 (-10) -5.6% |
| Circum. inches (mm) | 79.6 (2021.93) | 86.04 (2185.29) | 6.43 (163.36) 8.1% |
| Sidewall Height inches (mm) | 5.67 (144) | 6.69 (170) | 1.02 (26) 18.1% |
| Revolutions per mile (km) | 795.94 (494.58) | 736.44 (457.6) | -59.5 (-36.97) -7.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.62 mph (34.79 km/h) |
| 25 mph (40.23 km/h) | 27.02 mph (43.48 km/h) |
| 30 mph (48.28 km/h) | 32.42 mph (52.18 km/h) |
| 35 mph (56.33 km/h) | 37.83 mph (60.88 km/h) |
| 40 mph (64.37 km/h) | 43.23 mph (69.58 km/h) |
| 45 mph (72.42 km/h) | 48.64 mph (78.27 km/h) |
| 50 mph (80.47 km/h) | 54.04 mph (86.97 km/h) |
| 55 mph (88.51 km/h) | 59.44 mph (95.67 km/h) |
| 60 mph (96.56 km/h) | 64.85 mph (104.36 km/h) |
| 65 mph (104.61 km/h) | 70.25 mph (113.06 km/h) |
| 70 mph (112.65 km/h) | 75.66 mph (121.76 km/h) |
| 75 mph (120.7 km/h) | 81.06 mph (130.45 km/h) |
| 80 mph (128.75 km/h) | 86.46 mph (139.15 km/h) |
| 85 mph (136.79 km/h) | 91.87 mph (147.85 km/h) |
| 90 mph (144.84 km/h) | 97.27 mph (156.54 km/h) |
| 95 mph (152.89 km/h) | 102.68 mph (165.24 km/h) |
| 100 mph (160.93 km/h) | 108.08 mph (173.94 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1874 | 2177 | 2345 | 2448 | 2560 | 2640 | 2727 | 2831 | 2975 | 3118 | 3278 | 3405 | 3637 | 3892 | 4091 | 4219 | 4291 | 4554 | 4921 | 5718 |
Better Fuel Economy Factory Ratios Increased Power
