Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/65-14 | 165/55-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.42 (544.1) | 20.15 (511.7) | -1.28 (-32.4) -6% |
| Width inches (mm) | 5.71 (145) | 6.5 (165) | 0.79 (20) 13.8% |
| Circum. inches (mm) | 67.3 (1709.34) | 63.29 (1607.55) | -4.01 (-101.79) -6% |
| Sidewall Height inches (mm) | 3.71 (94.25) | 3.57 (90.75) | -0.14 (-3.5) -3.7% |
| Revolutions per mile (km) | 941.5 (585.02) | 1001.11 (622.06) | 59.61 (37.04) 6.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.81 mph (30.27 km/h) |
| 25 mph (40.23 km/h) | 23.51 mph (37.84 km/h) |
| 30 mph (48.28 km/h) | 28.21 mph (45.41 km/h) |
| 35 mph (56.33 km/h) | 32.92 mph (52.97 km/h) |
| 40 mph (64.37 km/h) | 37.62 mph (60.54 km/h) |
| 45 mph (72.42 km/h) | 42.32 mph (68.11 km/h) |
| 50 mph (80.47 km/h) | 47.02 mph (75.68 km/h) |
| 55 mph (88.51 km/h) | 51.72 mph (83.24 km/h) |
| 60 mph (96.56 km/h) | 56.43 mph (90.81 km/h) |
| 65 mph (104.61 km/h) | 61.13 mph (98.38 km/h) |
| 70 mph (112.65 km/h) | 65.83 mph (105.95 km/h) |
| 75 mph (120.7 km/h) | 70.53 mph (113.51 km/h) |
| 80 mph (128.75 km/h) | 75.24 mph (121.08 km/h) |
| 85 mph (136.79 km/h) | 79.94 mph (128.65 km/h) |
| 90 mph (144.84 km/h) | 84.64 mph (136.22 km/h) |
| 95 mph (152.89 km/h) | 89.34 mph (143.78 km/h) |
| 100 mph (160.93 km/h) | 94.05 mph (151.35 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
