The best way is to use a strong acid wheel cleaner. Before adding the solution, use a high-pressure washer to remove general dust and dirt. Be sure to spray between the spokes, around the well and the tyre.
For the best results, use the maximum pressure on the washer. Be sure your wheel is still wet before applying strong acid cleaning products.
Next, brush in the solution so it works effectively. Also, be sure to get to brake dust in the wheel openings and spokes. They often see a high accumulation of brake dust. Then, you can use a washcloth to wash the outer surface of the wheel.
Finally, rinse out your wheel and let it dry thoroughly before the next drive.