Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/80-14 | 120/70-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.34 (643.6) | 20.61 (523.6) | -4.72 (-120) -18.6% |
| Width inches (mm) | 7.09 (180) | 4.72 (120) | -2.36 (-60) -33.3% |
| Circum. inches (mm) | 79.6 (2021.93) | 64.76 (1644.94) | -14.84 (-376.99) -18.6% |
| Sidewall Height inches (mm) | 5.67 (144) | 3.31 (84) | -2.36 (-60) -41.7% |
| Revolutions per mile (km) | 795.94 (494.58) | 978.36 (607.92) | 182.42 (113.35) 22.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 16.27 mph (26.19 km/h) |
| 25 mph (40.23 km/h) | 20.34 mph (32.73 km/h) |
| 30 mph (48.28 km/h) | 24.41 mph (39.28 km/h) |
| 35 mph (56.33 km/h) | 28.47 mph (45.82 km/h) |
| 40 mph (64.37 km/h) | 32.54 mph (52.37 km/h) |
| 45 mph (72.42 km/h) | 36.61 mph (58.92 km/h) |
| 50 mph (80.47 km/h) | 40.68 mph (65.46 km/h) |
| 55 mph (88.51 km/h) | 44.75 mph (72.01 km/h) |
| 60 mph (96.56 km/h) | 48.81 mph (78.56 km/h) |
| 65 mph (104.61 km/h) | 52.88 mph (85.1 km/h) |
| 70 mph (112.65 km/h) | 56.95 mph (91.65 km/h) |
| 75 mph (120.7 km/h) | 61.02 mph (98.2 km/h) |
| 80 mph (128.75 km/h) | 65.08 mph (104.74 km/h) |
| 85 mph (136.79 km/h) | 69.15 mph (111.29 km/h) |
| 90 mph (144.84 km/h) | 73.22 mph (117.84 km/h) |
| 95 mph (152.89 km/h) | 77.29 mph (124.38 km/h) |
| 100 mph (160.93 km/h) | 81.35 mph (130.93 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
