Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/80-14 | 180/70-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.34 (643.6) | 23.92 (607.6) | -1.42 (-36) -5.6% |
| Width inches (mm) | 7.09 (180) | 7.09 (180) | 0 (0) 0% |
| Circum. inches (mm) | 79.6 (2021.93) | 75.15 (1908.83) | -4.45 (-113.1) -5.6% |
| Sidewall Height inches (mm) | 5.67 (144) | 4.96 (126) | -0.71 (-18) -12.5% |
| Revolutions per mile (km) | 795.94 (494.58) | 843.1 (523.88) | 47.16 (29.3) 5.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.88 mph (30.39 km/h) |
| 25 mph (40.23 km/h) | 23.6 mph (37.98 km/h) |
| 30 mph (48.28 km/h) | 28.32 mph (45.58 km/h) |
| 35 mph (56.33 km/h) | 33.04 mph (53.18 km/h) |
| 40 mph (64.37 km/h) | 37.76 mph (60.77 km/h) |
| 45 mph (72.42 km/h) | 42.48 mph (68.37 km/h) |
| 50 mph (80.47 km/h) | 47.2 mph (75.97 km/h) |
| 55 mph (88.51 km/h) | 51.92 mph (83.56 km/h) |
| 60 mph (96.56 km/h) | 56.64 mph (91.16 km/h) |
| 65 mph (104.61 km/h) | 61.36 mph (98.76 km/h) |
| 70 mph (112.65 km/h) | 66.08 mph (106.35 km/h) |
| 75 mph (120.7 km/h) | 70.8 mph (113.95 km/h) |
| 80 mph (128.75 km/h) | 75.53 mph (121.55 km/h) |
| 85 mph (136.79 km/h) | 80.25 mph (129.14 km/h) |
| 90 mph (144.84 km/h) | 84.97 mph (136.74 km/h) |
| 95 mph (152.89 km/h) | 89.69 mph (144.34 km/h) |
| 100 mph (160.93 km/h) | 94.41 mph (151.93 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2146 | 2492 | 2684 | 2803 | 2931 | 3022 | 3122 | 3241 | 3405 | 3570 | 3752 | 3898 | 4163 | 4455 | 4684 | 4830 | 4912 | 5213 | 5633 | 6546 |
Better Fuel Economy Factory Ratios Increased Power
