I did my Chevy Silverado when truck was new. They looked great! But I noticed whole sections of the caliper paint flaking off after 8-10 months. Hit them with a power washer and all the paint fell off. Pinged G2 help, sent some pix along with the vehicle info. I received the reply this morn: "The calipers are coated most likely with zinc which prevents paint bonding. The coating needs to be sanded off."
Did my '2013 vette and no issues
Just a headzup