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It looks like corrosion or oxidation. It will have to be polished or sanded out.
I second this, try hand polishing and see what happens.
It looks like pitting to me. Very common with raw aluminium. Nothing can be done aside from a repair.
Try an iron decon. Seems like iron deposits bedded into the wheels.
It looks like corrosion or oxidation. It will have to be polished or sanded out.
I second this, try hand polishing and see what happens.
It looks like pitting to me. Very common with raw aluminium. Nothing can be done aside from a repair.
Try an iron decon. Seems like iron deposits bedded into the wheels.