Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/80-14 | 175/75-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.34 (643.6) | 24.33 (618.1) | -1 (-25.5) -4% |
| Width inches (mm) | 7.09 (180) | 6.89 (175) | -0.2 (-5) -2.8% |
| Circum. inches (mm) | 79.6 (2021.93) | 76.45 (1941.82) | -3.15 (-80.11) -4% |
| Sidewall Height inches (mm) | 5.67 (144) | 5.17 (131.25) | -0.5 (-12.75) -8.9% |
| Revolutions per mile (km) | 795.94 (494.58) | 828.78 (514.98) | 32.84 (20.4) 4.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.21 mph (30.91 km/h) |
| 25 mph (40.23 km/h) | 24.01 mph (38.64 km/h) |
| 30 mph (48.28 km/h) | 28.81 mph (46.37 km/h) |
| 35 mph (56.33 km/h) | 33.61 mph (54.1 km/h) |
| 40 mph (64.37 km/h) | 38.42 mph (61.82 km/h) |
| 45 mph (72.42 km/h) | 43.22 mph (69.55 km/h) |
| 50 mph (80.47 km/h) | 48.02 mph (77.28 km/h) |
| 55 mph (88.51 km/h) | 52.82 mph (85.01 km/h) |
| 60 mph (96.56 km/h) | 57.62 mph (92.74 km/h) |
| 65 mph (104.61 km/h) | 62.42 mph (100.46 km/h) |
| 70 mph (112.65 km/h) | 67.23 mph (108.19 km/h) |
| 75 mph (120.7 km/h) | 72.03 mph (115.92 km/h) |
| 80 mph (128.75 km/h) | 76.83 mph (123.65 km/h) |
| 85 mph (136.79 km/h) | 81.63 mph (131.37 km/h) |
| 90 mph (144.84 km/h) | 86.43 mph (139.1 km/h) |
| 95 mph (152.89 km/h) | 91.24 mph (146.83 km/h) |
| 100 mph (160.93 km/h) | 96.04 mph (154.56 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2109 | 2450 | 2639 | 2755 | 2881 | 2971 | 3069 | 3186 | 3348 | 3509 | 3689 | 3832 | 4093 | 4380 | 4604 | 4748 | 4828 | 5125 | 5537 | 6435 |
Better Fuel Economy Factory Ratios Increased Power
