White Residue on 4RT Wheel

[mcman56]

There is some kind of white residue primarily on the front wheel of my 2018.  It looks sort of like mineral deposits from where water dried.  Detergent, Isopropyl alcohol and acetone do not remove it.  A carnauba cleaner wax removes some but is way too much work for old hands.  The rag with cleaner turns black so maybe it is some kind of oxidation.  Is there an easy way to remove it?  

[Tr1AL]

11 minutes ago, mcman56 said:

There is some kind of white residue primarily on the front wheel of my 2018.  It looks sort of like mineral deposits from where water dried.  Detergent, Isopropyl alcohol and acetone do not remove it.  A carnauba cleaner wax removes some but is way too much work for old hands.  The rag with cleaner turns black so maybe it is some kind of oxidation.  Is there an easy way to remove it?  

Just buy a new rim and get the wheel rebuilt, Its the only way its going to be great again.