idealrides

Just got a set of 4 OEM rotors under warranty... they'll probably warp again so I'm looking for some cross drilled or slotted rotors that can "take the heat" and will work with OEM s4 calipers.... 320mm front/255mm rear

any recommendations? (i.e. looking for vendors & cost)

frank

I think only Alcon makes some Rotors for the stock 321mm size


we'll know more after WagonBoy or whoever it was, tries them

winder

real nice units! hi quality machining and material. they are about 4lbs lighter than stock (18 vs 22) rotors, but these won't warp as easily as teh OEM will. cross-drilling the stock rotors is probably not a good idea, based on the rotors design and material, and the properties of the small pads on the POF'nS stock calipers. it may not be an option anyway.
WB's has had the Alcons a couple of days, and he reports marginal better stopping with them. he's planning on going to the track today (now that he's done it a few times and can't get enough!) and could probably be convinced to update on the track-performace of these.

WagonBoy

Yeah, what he said! :-) Will give full report tonight...must got to track now!

OneTurboSomeDay

Apparently the stock calipers flex pretty badly, the stoptechs are a lot stiffer

Gorobei

You going to the track without us, you scoundrel? I'm declaring shenanigans on you!