Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/55-12 | 185/50-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.15 (486.3) | 19.28 (489.8) | 0.14 (3.5) 0.7% |
| Width inches (mm) | 6.5 (165) | 7.28 (185) | 0.79 (20) 12.1% |
| Circum. inches (mm) | 60.15 (1527.76) | 60.58 (1538.75) | 0.43 (11) 0.7% |
| Sidewall Height inches (mm) | 3.57 (90.75) | 3.64 (92.5) | 0.07 (1.75) 1.9% |
| Revolutions per mile (km) | 1053.4 (654.55) | 1045.88 (649.88) | -7.53 (-4.68) -0.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.14 mph (32.42 km/h) |
| 25 mph (40.23 km/h) | 25.18 mph (40.52 km/h) |
| 30 mph (48.28 km/h) | 30.22 mph (48.63 km/h) |
| 35 mph (56.33 km/h) | 35.25 mph (56.73 km/h) |
| 40 mph (64.37 km/h) | 40.29 mph (64.84 km/h) |
| 45 mph (72.42 km/h) | 45.32 mph (72.94 km/h) |
| 50 mph (80.47 km/h) | 50.36 mph (81.05 km/h) |
| 55 mph (88.51 km/h) | 55.4 mph (89.15 km/h) |
| 60 mph (96.56 km/h) | 60.43 mph (97.26 km/h) |
| 65 mph (104.61 km/h) | 65.47 mph (105.36 km/h) |
| 70 mph (112.65 km/h) | 70.5 mph (113.47 km/h) |
| 75 mph (120.7 km/h) | 75.54 mph (121.57 km/h) |
| 80 mph (128.75 km/h) | 80.58 mph (129.67 km/h) |
| 85 mph (136.79 km/h) | 85.61 mph (137.78 km/h) |
| 90 mph (144.84 km/h) | 90.65 mph (145.88 km/h) |
| 95 mph (152.89 km/h) | 95.68 mph (153.99 km/h) |
| 100 mph (160.93 km/h) | 100.72 mph (162.09 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
