Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/80-14 | 180/65-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.34 (643.6) | 23.21 (589.6) | -2.13 (-54) -8.4% |
| Width inches (mm) | 7.09 (180) | 7.09 (180) | 0 (0) 0% |
| Circum. inches (mm) | 79.6 (2021.93) | 72.92 (1852.28) | -6.68 (-169.65) -8.4% |
| Sidewall Height inches (mm) | 5.67 (144) | 4.61 (117) | -1.06 (-27) -18.8% |
| Revolutions per mile (km) | 795.94 (494.58) | 868.84 (539.87) | 72.9 (45.3) 9.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.32 mph (29.49 km/h) |
| 25 mph (40.23 km/h) | 22.9 mph (36.86 km/h) |
| 30 mph (48.28 km/h) | 27.48 mph (44.23 km/h) |
| 35 mph (56.33 km/h) | 32.06 mph (51.6 km/h) |
| 40 mph (64.37 km/h) | 36.64 mph (58.97 km/h) |
| 45 mph (72.42 km/h) | 41.22 mph (66.34 km/h) |
| 50 mph (80.47 km/h) | 45.8 mph (73.72 km/h) |
| 55 mph (88.51 km/h) | 50.39 mph (81.09 km/h) |
| 60 mph (96.56 km/h) | 54.97 mph (88.46 km/h) |
| 65 mph (104.61 km/h) | 59.55 mph (95.83 km/h) |
| 70 mph (112.65 km/h) | 64.13 mph (103.2 km/h) |
| 75 mph (120.7 km/h) | 68.71 mph (110.57 km/h) |
| 80 mph (128.75 km/h) | 73.29 mph (117.95 km/h) |
| 85 mph (136.79 km/h) | 77.87 mph (125.32 km/h) |
| 90 mph (144.84 km/h) | 82.45 mph (132.69 km/h) |
| 95 mph (152.89 km/h) | 87.03 mph (140.06 km/h) |
| 100 mph (160.93 km/h) | 91.61 mph (147.43 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2211 | 2569 | 2766 | 2888 | 3020 | 3114 | 3218 | 3340 | 3509 | 3679 | 3867 | 4018 | 4290 | 4591 | 4827 | 4977 | 5062 | 5372 | 5805 | 6746 |
Better Fuel Economy Factory Ratios Increased Power
