Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/80-13 | 165/65-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.34 (618.2) | 21.44 (544.7) | -2.89 (-73.5) -11.9% |
| Width inches (mm) | 7.09 (180) | 6.5 (165) | -0.59 (-15) -8.3% |
| Circum. inches (mm) | 76.46 (1942.13) | 67.37 (1711.23) | -9.09 (-230.91) -11.9% |
| Sidewall Height inches (mm) | 5.67 (144) | 4.22 (107.25) | -1.45 (-36.75) -25.5% |
| Revolutions per mile (km) | 828.65 (514.9) | 940.46 (584.38) | 111.81 (69.48) 13.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.62 mph (28.36 km/h) |
| 25 mph (40.23 km/h) | 22.03 mph (35.45 km/h) |
| 30 mph (48.28 km/h) | 26.43 mph (42.54 km/h) |
| 35 mph (56.33 km/h) | 30.84 mph (49.63 km/h) |
| 40 mph (64.37 km/h) | 35.24 mph (56.72 km/h) |
| 45 mph (72.42 km/h) | 39.65 mph (63.81 km/h) |
| 50 mph (80.47 km/h) | 44.06 mph (70.9 km/h) |
| 55 mph (88.51 km/h) | 48.46 mph (77.99 km/h) |
| 60 mph (96.56 km/h) | 52.87 mph (85.08 km/h) |
| 65 mph (104.61 km/h) | 57.27 mph (92.17 km/h) |
| 70 mph (112.65 km/h) | 61.68 mph (99.26 km/h) |
| 75 mph (120.7 km/h) | 66.08 mph (106.35 km/h) |
| 80 mph (128.75 km/h) | 70.49 mph (113.44 km/h) |
| 85 mph (136.79 km/h) | 74.89 mph (120.53 km/h) |
| 90 mph (144.84 km/h) | 79.3 mph (127.62 km/h) |
| 95 mph (152.89 km/h) | 83.71 mph (134.71 km/h) |
| 100 mph (160.93 km/h) | 88.11 mph (141.8 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
