Feeling your pain made me think of taking alloy wheel insurance.
Dealer obviously gave me a quote when I ordered my car on Friday for all the usual add ons.
I've mange to get GAP full replacement for £250 from ALA, but apparently you can only get alloy wheel cover for diamond cut ones from the dealer when you buy as anyone else repairing them invalidates the warranty on them.
Dealer wanted £260 For wheel cover so maybe worth it considering the cost of expensive diamond cut wheels.