Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/80-14 | 120/80-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.34 (643.6) | 25.56 (649.2) | 0.22 (5.6) 0.9% |
| Width inches (mm) | 7.09 (180) | 4.72 (120) | -2.36 (-60) -33.3% |
| Circum. inches (mm) | 79.6 (2021.93) | 80.3 (2039.52) | 0.69 (17.59) 0.9% |
| Sidewall Height inches (mm) | 5.67 (144) | 3.78 (96) | -1.89 (-48) -33.3% |
| Revolutions per mile (km) | 795.94 (494.58) | 789.08 (490.31) | -6.87 (-4.27) -0.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.17 mph (32.47 km/h) |
| 25 mph (40.23 km/h) | 25.22 mph (40.58 km/h) |
| 30 mph (48.28 km/h) | 30.26 mph (48.7 km/h) |
| 35 mph (56.33 km/h) | 35.3 mph (56.82 km/h) |
| 40 mph (64.37 km/h) | 40.35 mph (64.93 km/h) |
| 45 mph (72.42 km/h) | 45.39 mph (73.05 km/h) |
| 50 mph (80.47 km/h) | 50.44 mph (81.17 km/h) |
| 55 mph (88.51 km/h) | 55.48 mph (89.28 km/h) |
| 60 mph (96.56 km/h) | 60.52 mph (97.4 km/h) |
| 65 mph (104.61 km/h) | 65.57 mph (105.52 km/h) |
| 70 mph (112.65 km/h) | 70.61 mph (113.63 km/h) |
| 75 mph (120.7 km/h) | 75.65 mph (121.75 km/h) |
| 80 mph (128.75 km/h) | 80.7 mph (129.87 km/h) |
| 85 mph (136.79 km/h) | 85.74 mph (137.98 km/h) |
| 90 mph (144.84 km/h) | 90.78 mph (146.1 km/h) |
| 95 mph (152.89 km/h) | 95.83 mph (154.22 km/h) |
| 100 mph (160.93 km/h) | 100.87 mph (162.34 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2008 | 2333 | 2512 | 2623 | 2743 | 2828 | 2922 | 3033 | 3187 | 3341 | 3512 | 3649 | 3896 | 4170 | 4384 | 4520 | 4597 | 4879 | 5272 | 6127 |
Better Fuel Economy Factory Ratios Increased Power
