The Euro floating rotors aren't going to "feel" any different or change the way your car brakes. The big advantage to them is that they are about 1.5 pounds lighter per rotor in front and slightly less in back. That's helpful for improving ride and handling. And during severe driving conditions (i.e. track events) the rotor will be less prone to distortion since it can expand in all directions unconstrained. That leads to less tapered pad wear and firmer pedal feel during track conditions. It does nothing on the street at legal speeds.Texas said:Anybody know anything about european floating rotors as an alternative to the pricey big brake kits by Brembo and Stop Tech for mostly street use? I'm told they are a big improvement over stock for a guy who doesn't track his car much. Where can I get them?
At the risk of sounding picky, let's discuss the "heat capacity" of the Euro floating rotors. If you use the traditional definition of heat capacity, meaning how much heat can it absorb before you run into fade problems, then it actually has LESS heat capacity than the 1-piece American rotors. The aluminum center hub, isolated by 12 steel pins, means the iron friction ring has less mass to hold rhe same amount of thermal energy. Thus, for any given stop, the Euro rotor will be hotter than the American rotor. Bottom line - the American rotor is a bigger heat sink. As far as SHEDDING heat, the two rotors should be very similar.RRoberts said:All of the above having been said, I did add the Euro 2-piece rotors in the rear of my car to get a little more heat capacity.
You are correct. The steel pins isolate the aluminum hat from the iron friction ring, resulting in less heat transfer to the wheel bearings.Úbermensch said:I take it by there being less heat transfer (than a solid once piece design) there's also less chance of grease being boiled out of the wheel bearing (leading to its failure) with the floating disc ? or is that even an issue nowadays, its just something my mechanic brought up while lambasting about glowing-red-wheel-disc syndrome :7:
Dave:DZeckhausen said:Now let's take a looser definition of "heat capacity" where it can mean the ability of the Euro rotor to get really really hot and still not have some of the problems that would affect performance on the 1-piece rotor. The fact that the Euro rotor actually floats on those 12 pins, means that it won't distort at high temperature. (This is called coning.) So you end up with a firmer pedal under race conditions since the rotor remains flat. Unless you also change pads to a higher performance compound and flush your brake fluid with something like Motul 600, the Euro rotors will not help you avoid fluid fade or pad fade. In fact, they may aggravate an existing condition.
Dave,At the risk of sounding picky, let's discuss the "heat capacity" of the Euro floating rotors.
I couldn't have put it better! Thanks for saving me some typing. :cheers:RRoberts said:Not to answer for Dave Z., but his answer says:
1. The brake part ... blah blah blah [stuff deleted]