Answer
For aluminum wheel polishing prep, use 400 or 600, then 800, 1000, 1500, 2000, and 3000 before polish.
Why it happens
Aluminum needs a step-by-step sanding sequence before polishing can create shine.
Recommended grit
Use 400 or 600 for prep, then 800, 1000, 1500, 2000, and 3000 before polishing.
Wet or dry
Dry for early prep; wet for finer stages.
Success check
The aluminum has a uniform fine haze before polishing.
What to do
- Clean brake dust and residue first.
- Start with 400 or 600 depending on scratch depth.
- Refine through 800, 1000, 1500, 2000, and 3000.
- Polish after the final sanding step.
Avoid: Do not polish over deep 400- or 600-grit scratches.