Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/55-13 | 145/80-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.15 (511.7) | 22.13 (562.2) | 1.99 (50.5) 9.9% |
| Width inches (mm) | 6.5 (165) | 5.71 (145) | -0.79 (-20) -12.1% |
| Circum. inches (mm) | 63.29 (1607.55) | 69.54 (1766.2) | 6.25 (158.65) 9.9% |
| Sidewall Height inches (mm) | 3.57 (90.75) | 4.57 (116) | 0.99 (25.25) 27.8% |
| Revolutions per mile (km) | 1001.11 (622.06) | 911.19 (566.19) | -89.93 (-55.88) -9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.97 mph (35.36 km/h) |
| 25 mph (40.23 km/h) | 27.47 mph (44.2 km/h) |
| 30 mph (48.28 km/h) | 32.96 mph (53.05 km/h) |
| 35 mph (56.33 km/h) | 38.45 mph (61.89 km/h) |
| 40 mph (64.37 km/h) | 43.95 mph (70.73 km/h) |
| 45 mph (72.42 km/h) | 49.44 mph (79.57 km/h) |
| 50 mph (80.47 km/h) | 54.93 mph (88.41 km/h) |
| 55 mph (88.51 km/h) | 60.43 mph (97.25 km/h) |
| 60 mph (96.56 km/h) | 65.92 mph (106.09 km/h) |
| 65 mph (104.61 km/h) | 71.41 mph (114.93 km/h) |
| 70 mph (112.65 km/h) | 76.91 mph (123.77 km/h) |
| 75 mph (120.7 km/h) | 82.4 mph (132.61 km/h) |
| 80 mph (128.75 km/h) | 87.9 mph (141.45 km/h) |
| 85 mph (136.79 km/h) | 93.39 mph (150.29 km/h) |
| 90 mph (144.84 km/h) | 98.88 mph (159.14 km/h) |
| 95 mph (152.89 km/h) | 104.38 mph (167.98 km/h) |
| 100 mph (160.93 km/h) | 109.87 mph (176.82 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2319 | 2694 | 2901 | 3029 | 3167 | 3266 | 3375 | 3503 | 3680 | 3858 | 4055 | 4213 | 4499 | 4815 | 5062 | 5220 | 5309 | 5634 | 6088 | 7075 |
Better Fuel Economy Factory Ratios Increased Power
