Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/65-14 | 165/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.42 (544.1) | 23.44 (595.5) | 2.02 (51.4) 9.4% |
| Width inches (mm) | 5.71 (145) | 6.5 (165) | 0.79 (20) 13.8% |
| Circum. inches (mm) | 67.3 (1709.34) | 73.65 (1870.82) | 6.36 (161.48) 9.4% |
| Sidewall Height inches (mm) | 3.71 (94.25) | 4.22 (107.25) | 0.51 (13) 13.8% |
| Revolutions per mile (km) | 941.5 (585.02) | 860.24 (534.52) | -81.26 (-50.5) -8.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.89 mph (35.23 km/h) |
| 25 mph (40.23 km/h) | 27.36 mph (44.03 km/h) |
| 30 mph (48.28 km/h) | 32.83 mph (52.84 km/h) |
| 35 mph (56.33 km/h) | 38.31 mph (61.65 km/h) |
| 40 mph (64.37 km/h) | 43.78 mph (70.46 km/h) |
| 45 mph (72.42 km/h) | 49.25 mph (79.26 km/h) |
| 50 mph (80.47 km/h) | 54.72 mph (88.07 km/h) |
| 55 mph (88.51 km/h) | 60.2 mph (96.88 km/h) |
| 60 mph (96.56 km/h) | 65.67 mph (105.68 km/h) |
| 65 mph (104.61 km/h) | 71.14 mph (114.49 km/h) |
| 70 mph (112.65 km/h) | 76.61 mph (123.3 km/h) |
| 75 mph (120.7 km/h) | 82.09 mph (132.1 km/h) |
| 80 mph (128.75 km/h) | 87.56 mph (140.91 km/h) |
| 85 mph (136.79 km/h) | 93.03 mph (149.72 km/h) |
| 90 mph (144.84 km/h) | 98.5 mph (158.52 km/h) |
| 95 mph (152.89 km/h) | 103.97 mph (167.33 km/h) |
| 100 mph (160.93 km/h) | 109.45 mph (176.14 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
