Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/55-12 | 165/40-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.15 (486.3) | 19.2 (487.6) | 0.05 (1.3) 0.3% |
| Width inches (mm) | 6.5 (165) | 6.5 (165) | 0 (0) 0% |
| Circum. inches (mm) | 60.15 (1527.76) | 60.31 (1531.84) | 0.16 (4.08) 0.3% |
| Sidewall Height inches (mm) | 3.57 (90.75) | 2.6 (66) | -0.97 (-24.75) -27.3% |
| Revolutions per mile (km) | 1053.4 (654.55) | 1050.59 (652.81) | -2.81 (-1.75) -0.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.05 mph (32.27 km/h) |
| 25 mph (40.23 km/h) | 25.07 mph (40.34 km/h) |
| 30 mph (48.28 km/h) | 30.08 mph (48.41 km/h) |
| 35 mph (56.33 km/h) | 35.09 mph (56.48 km/h) |
| 40 mph (64.37 km/h) | 40.11 mph (64.55 km/h) |
| 45 mph (72.42 km/h) | 45.12 mph (72.61 km/h) |
| 50 mph (80.47 km/h) | 50.13 mph (80.68 km/h) |
| 55 mph (88.51 km/h) | 55.15 mph (88.75 km/h) |
| 60 mph (96.56 km/h) | 60.16 mph (96.82 km/h) |
| 65 mph (104.61 km/h) | 65.17 mph (104.89 km/h) |
| 70 mph (112.65 km/h) | 70.19 mph (112.96 km/h) |
| 75 mph (120.7 km/h) | 75.2 mph (121.02 km/h) |
| 80 mph (128.75 km/h) | 80.21 mph (129.09 km/h) |
| 85 mph (136.79 km/h) | 85.23 mph (137.16 km/h) |
| 90 mph (144.84 km/h) | 90.24 mph (145.23 km/h) |
| 95 mph (152.89 km/h) | 95.25 mph (153.3 km/h) |
| 100 mph (160.93 km/h) | 100.27 mph (161.36 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
