Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 160/80-15 | 180/80-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.08 (637) | 26.34 (669) | 1.26 (32) 5% |
| Width inches (mm) | 6.3 (160) | 7.09 (180) | 0.79 (20) 12.5% |
| Circum. inches (mm) | 78.79 (2001.19) | 82.75 (2101.73) | 3.96 (100.53) 5% |
| Sidewall Height inches (mm) | 5.04 (128) | 5.67 (144) | 0.63 (16) 12.5% |
| Revolutions per mile (km) | 804.19 (499.7) | 765.73 (475.8) | -38.47 (-23.9) -4.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21 mph (33.8 km/h) |
| 25 mph (40.23 km/h) | 26.26 mph (42.25 km/h) |
| 30 mph (48.28 km/h) | 31.51 mph (50.71 km/h) |
| 35 mph (56.33 km/h) | 36.76 mph (59.16 km/h) |
| 40 mph (64.37 km/h) | 42.01 mph (67.61 km/h) |
| 45 mph (72.42 km/h) | 47.26 mph (76.06 km/h) |
| 50 mph (80.47 km/h) | 52.51 mph (84.51 km/h) |
| 55 mph (88.51 km/h) | 57.76 mph (92.96 km/h) |
| 60 mph (96.56 km/h) | 63.01 mph (101.41 km/h) |
| 65 mph (104.61 km/h) | 68.27 mph (109.86 km/h) |
| 70 mph (112.65 km/h) | 73.52 mph (118.31 km/h) |
| 75 mph (120.7 km/h) | 78.77 mph (126.76 km/h) |
| 80 mph (128.75 km/h) | 84.02 mph (135.22 km/h) |
| 85 mph (136.79 km/h) | 89.27 mph (143.67 km/h) |
| 90 mph (144.84 km/h) | 94.52 mph (152.12 km/h) |
| 95 mph (152.89 km/h) | 99.77 mph (160.57 km/h) |
| 100 mph (160.93 km/h) | 105.02 mph (169.02 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1949 | 2264 | 2438 | 2546 | 2662 | 2745 | 2836 | 2944 | 3093 | 3242 | 3408 | 3541 | 3781 | 4047 | 4254 | 4386 | 4461 | 4735 | 5116 | 5945 |
Better Fuel Economy Factory Ratios Increased Power
