Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/60-15 | 165/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.85 (555) | 23.44 (595.5) | 1.59 (40.5) 7.3% |
| Width inches (mm) | 5.71 (145) | 6.5 (165) | 0.79 (20) 13.8% |
| Circum. inches (mm) | 68.65 (1743.58) | 73.65 (1870.82) | 5.01 (127.23) 7.3% |
| Sidewall Height inches (mm) | 3.43 (87) | 4.22 (107.25) | 0.8 (20.25) 23.3% |
| Revolutions per mile (km) | 923.01 (573.53) | 860.24 (534.52) | -62.77 (-39.01) -6.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.46 mph (34.54 km/h) |
| 25 mph (40.23 km/h) | 26.82 mph (43.17 km/h) |
| 30 mph (48.28 km/h) | 32.19 mph (51.8 km/h) |
| 35 mph (56.33 km/h) | 37.55 mph (60.44 km/h) |
| 40 mph (64.37 km/h) | 42.92 mph (69.07 km/h) |
| 45 mph (72.42 km/h) | 48.28 mph (77.71 km/h) |
| 50 mph (80.47 km/h) | 53.65 mph (86.34 km/h) |
| 55 mph (88.51 km/h) | 59.01 mph (94.97 km/h) |
| 60 mph (96.56 km/h) | 64.38 mph (103.61 km/h) |
| 65 mph (104.61 km/h) | 69.74 mph (112.24 km/h) |
| 70 mph (112.65 km/h) | 75.11 mph (120.88 km/h) |
| 75 mph (120.7 km/h) | 80.47 mph (129.51 km/h) |
| 80 mph (128.75 km/h) | 85.84 mph (138.14 km/h) |
| 85 mph (136.79 km/h) | 91.2 mph (146.78 km/h) |
| 90 mph (144.84 km/h) | 96.57 mph (155.41 km/h) |
| 95 mph (152.89 km/h) | 101.93 mph (164.04 km/h) |
| 100 mph (160.93 km/h) | 107.3 mph (172.68 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2189 | 2543 | 2739 | 2860 | 2990 | 3083 | 3186 | 3307 | 3475 | 3642 | 3829 | 3978 | 4248 | 4546 | 4779 | 4928 | 5012 | 5319 | 5748 | 6679 |
Better Fuel Economy Factory Ratios Increased Power
