I have a set of these and didn't realize that they were clear-coated. I've been using metal polish on them.
'09 PSM G8 GT w/ Premium & Sport packages.
Go: TSP 403 stroker, Kooks 1 7/8" LTs, Corsa, VCM OTRCAI, RCR AirRam intake, ported TB, and 223/235 cam, 100mm LS7 MAF, 3.27 gears, Circle-D 3200 stall. Tuned by Me. 11.33 @ 121
Whoa!: CTS-V/ Camaro 4-piston Brembos, Hawk pads, DBA rotors, full Zeta II front and rear suspension swap w/ BMR goodies and BC coil-overs.
Show: 4300K TRS HIDs, LED fogs, VG Sharkfin, GXP diffuser, 10% tint, de-badged, polished CTS-V wheels.