Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/80-14 | 180/60-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.34 (643.6) | 23.5 (597) | -1.83 (-46.6) -7.2% |
| Width inches (mm) | 7.09 (180) | 7.09 (180) | 0 (0) 0% |
| Circum. inches (mm) | 79.6 (2021.93) | 73.84 (1875.53) | -5.76 (-146.4) -7.2% |
| Sidewall Height inches (mm) | 5.67 (144) | 4.25 (108) | -1.42 (-36) -25% |
| Revolutions per mile (km) | 795.94 (494.58) | 858.07 (533.18) | 62.13 (38.61) 7.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.55 mph (29.86 km/h) |
| 25 mph (40.23 km/h) | 23.19 mph (37.32 km/h) |
| 30 mph (48.28 km/h) | 27.83 mph (44.78 km/h) |
| 35 mph (56.33 km/h) | 32.47 mph (52.25 km/h) |
| 40 mph (64.37 km/h) | 37.1 mph (59.71 km/h) |
| 45 mph (72.42 km/h) | 41.74 mph (67.18 km/h) |
| 50 mph (80.47 km/h) | 46.38 mph (74.64 km/h) |
| 55 mph (88.51 km/h) | 51.02 mph (82.11 km/h) |
| 60 mph (96.56 km/h) | 55.66 mph (89.57 km/h) |
| 65 mph (104.61 km/h) | 60.29 mph (97.03 km/h) |
| 70 mph (112.65 km/h) | 64.93 mph (104.5 km/h) |
| 75 mph (120.7 km/h) | 69.57 mph (111.96 km/h) |
| 80 mph (128.75 km/h) | 74.21 mph (119.43 km/h) |
| 85 mph (136.79 km/h) | 78.85 mph (126.89 km/h) |
| 90 mph (144.84 km/h) | 83.48 mph (134.35 km/h) |
| 95 mph (152.89 km/h) | 88.12 mph (141.82 km/h) |
| 100 mph (160.93 km/h) | 92.76 mph (149.28 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2184 | 2537 | 2732 | 2853 | 2983 | 3076 | 3178 | 3299 | 3466 | 3633 | 3819 | 3968 | 4237 | 4535 | 4767 | 4915 | 4999 | 5306 | 5733 | 6662 |
Better Fuel Economy Factory Ratios Increased Power
