Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/80-13 | 175/75-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.34 (618.2) | 23.33 (592.7) | -1 (-25.5) -4.1% |
| Width inches (mm) | 7.09 (180) | 6.89 (175) | -0.2 (-5) -2.8% |
| Circum. inches (mm) | 76.46 (1942.13) | 73.31 (1862.02) | -3.15 (-80.11) -4.1% |
| Sidewall Height inches (mm) | 5.67 (144) | 5.17 (131.25) | -0.5 (-12.75) -8.9% |
| Revolutions per mile (km) | 828.65 (514.9) | 864.3 (537.05) | 35.65 (22.15) 4.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.18 mph (30.86 km/h) |
| 25 mph (40.23 km/h) | 23.97 mph (38.57 km/h) |
| 30 mph (48.28 km/h) | 28.76 mph (46.29 km/h) |
| 35 mph (56.33 km/h) | 33.56 mph (54 km/h) |
| 40 mph (64.37 km/h) | 38.35 mph (61.72 km/h) |
| 45 mph (72.42 km/h) | 43.14 mph (69.43 km/h) |
| 50 mph (80.47 km/h) | 47.94 mph (77.15 km/h) |
| 55 mph (88.51 km/h) | 52.73 mph (84.86 km/h) |
| 60 mph (96.56 km/h) | 57.53 mph (92.58 km/h) |
| 65 mph (104.61 km/h) | 62.32 mph (100.29 km/h) |
| 70 mph (112.65 km/h) | 67.11 mph (108.01 km/h) |
| 75 mph (120.7 km/h) | 71.91 mph (115.72 km/h) |
| 80 mph (128.75 km/h) | 76.7 mph (123.44 km/h) |
| 85 mph (136.79 km/h) | 81.49 mph (131.15 km/h) |
| 90 mph (144.84 km/h) | 86.29 mph (138.87 km/h) |
| 95 mph (152.89 km/h) | 91.08 mph (146.58 km/h) |
| 100 mph (160.93 km/h) | 95.88 mph (154.3 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2199 | 2555 | 2752 | 2873 | 3004 | 3098 | 3201 | 3323 | 3491 | 3660 | 3847 | 3996 | 4268 | 4567 | 4801 | 4951 | 5035 | 5344 | 5775 | 6711 |
Better Fuel Economy Factory Ratios Increased Power
