Thats the best part of bedliner you have a scratch proof paint job and if you do get a scratch its as easy as grabbin a rattle can to touch it up. Chrome isnt a bad surface to work with, i would prep it just like the chrome bumpers. Just sand it down good and prime it with rustoleum self etching primer then do 1 can of rustoleum bedliner per wheel and you will be all set. Hope this helps.
-Dave
Sent from my DROIDX using AutoGuide App
-Dave
Sent from my DROIDX using AutoGuide App