Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/80-13 | 155/65-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.34 (618.2) | 20.93 (531.7) | -3.41 (-86.5) -14% |
| Width inches (mm) | 7.09 (180) | 6.1 (155) | -0.98 (-25) -13.9% |
| Circum. inches (mm) | 76.46 (1942.13) | 65.76 (1670.38) | -10.7 (-271.75) -14% |
| Sidewall Height inches (mm) | 5.67 (144) | 3.97 (100.75) | -1.7 (-43.25) -30% |
| Revolutions per mile (km) | 828.65 (514.9) | 963.46 (598.66) | 134.81 (83.77) 16.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.2 mph (27.68 km/h) |
| 25 mph (40.23 km/h) | 21.5 mph (34.6 km/h) |
| 30 mph (48.28 km/h) | 25.8 mph (41.52 km/h) |
| 35 mph (56.33 km/h) | 30.1 mph (48.45 km/h) |
| 40 mph (64.37 km/h) | 34.4 mph (55.37 km/h) |
| 45 mph (72.42 km/h) | 38.7 mph (62.29 km/h) |
| 50 mph (80.47 km/h) | 43 mph (69.21 km/h) |
| 55 mph (88.51 km/h) | 47.3 mph (76.13 km/h) |
| 60 mph (96.56 km/h) | 51.6 mph (83.05 km/h) |
| 65 mph (104.61 km/h) | 55.91 mph (89.97 km/h) |
| 70 mph (112.65 km/h) | 60.21 mph (96.89 km/h) |
| 75 mph (120.7 km/h) | 64.51 mph (103.81 km/h) |
| 80 mph (128.75 km/h) | 68.81 mph (110.73 km/h) |
| 85 mph (136.79 km/h) | 73.11 mph (117.65 km/h) |
| 90 mph (144.84 km/h) | 77.41 mph (124.57 km/h) |
| 95 mph (152.89 km/h) | 81.71 mph (131.5 km/h) |
| 100 mph (160.93 km/h) | 86.01 mph (138.42 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
