| looking at your pic I would say that the cleaner has eaten away the lacquer and hasn't damaged the alloy. It may be that the lacquer was not applied perfectly allowing the cleaner to 'lift' areas of it.
It does look ugly but wheel refurbishers can get these looking like new.
You may have a long battle on your hands to get MINI or the cleaner manufacturer to take liability.
Gutted for you.
'enry | 
