The GoodYear protective sidewall rib has been doing a great job protecting my stock ZL 1 black wheels. I did spring for a $500.00 policy from the same source that covered my 2009 C 63 AMG boy racer. This policy covers tires and rims from any damage (curbs included) and also takes care of glass and paintless dent repair for a 5 year period. If they can't repair the wheels or the tires speed rating is endangered, they buy new stuff for ya'. It paid for itself twice over on my Merc, so I sprung for it again. 100 bucks a year is P-Nuts.
Cheers - Boyd