I checked a couple of the big aftermarket brake sellers and they both said that the rotors I want just don't exist and all rotors are cast iron (which rusts). Any coating will get worn off by the pads.If you want a rotor that doesn't rust in the pad contact area, you're going to have to move away from iron rotors. That means you'll probably have to go with a one-off carbon rotor which is big time $$$$ (or you can go with a BBK w/ a carbon rotor option, but still big time $$$$)
Oh yeah driving round the block gets rid of the thin daily surface rust but I'm looking at replacing rotors for the 2nd time (over two cars) due to deep corrosion on the back side.I think the problem with stainless steel would be issues with heat capacity and dissipation as well as cost (considering this is a very regularly replaced consumable item). Wouldn't just driving around the block remove said rust from the friction area?
Back side as in the inside swept area.Back side as in the hub side or internals (cooling vane area)?
The car has only done 7000 miles per year in the almost two years I've had it (I got it at nearly 3 years old) so I think a lot of sitting with rust getting deeper & deeper is the cause.No clue then. On the RSX, extreme heat was always a good way to keep the rust at bay... but then we're talking about 800+ degrees rotor surface temps here.