Please don't flame me right away, because i know that this subject has been talked about many many times in the US-spec forum, however, i was wondering what people have to say that already have the Euro brake-rotors, but feel that they're not enough.

So, my problem is that, after about 25-30 minutes of hard driving (mountain roads, lots of braking, up and downhill etc.) my brakes start to fade really fast and quite bad.
When i bought the car, the rotors seemed fine, although they do seem pretty old, and the car has been standing for a few months. Quite a fair amount of rust buildup on the inside. The pads seem very new, lots of life left in them from just peering through the wheels. The brakefluid, i think, has been replaced at the last service, which was, erm, 20k kilometers ago or so. That being the major cause, and quite a simple problem to fix, i'll go check it out, but i'm confident that it isn't the fluid.

Now, i'm not really tracking my car hard, just the occasional mountain run and maybe, a trackday or so. Mostly street driving, so a BBK is not really necessary as of right now (Also, i'd rather do suspension first anyway).
A friend has Zimmermann crossdrilled rotors on his 95 3.0 and loves them. I forgot which pads he had, but they are street-track pads. Now, i'm not sure how Zimmermann makes their rotors, but i don't think they cast the holes while making them, so i presume that they are drilled afterwards. That's something i'm not very fond of, primarily because of the structural integrity. So i've been thinking about slotted rotors.
As far as i can tell, Power Slot are the only ones making just slotted rotors, whereas Brembo makes blanks or crossdrilles + slotted and AP makes slotted versions for their BBKs.
There is always the way of just going OEM, ofcourse. I can't really say how the standard rotors perform, because, like i said, mine are quite old by now and are starting to get grooved. Is it even worth going slotted for my needs?

Another problem i seem to have, which most likely can be related to my worn rotors/bad pads etc., is that while autobahn cruising in the rain, i step on my brakes after not using them for, somewhere around 10-15 minutes. It feels as if the brakepads are 'hydroplaning' on the pads (Sorry, no idea how else to explain it). They just don't bite, only after maybe a second or so do they get 'grip' and slow the car. Now, that's not necessarily a fun thing when you have to slow down rapidly. I"m not sure if it's the rotors again, pads or the brakes just get coated with water that can't run off properly.

Ok, i'll stop now. Too much talking already.

Thanks for looking, and have fun out there :D

1) Get better pads. BMW OE pads OR Hawk HP Plus pads OR other brand of pad that is street/track/intermediate. Stay away from Ceramic pads, haven't been a fan of them on the M3s.

2) No slots, no holes, just original BMW or Brembo or other standard replacement is fine. I have the Performance Friction rotors (see bimmerworld) for my Euro 3.2L M3, and they work like a dream at the track without any of the typical floating rotor chatter that racing rotors have on the street.

3) Wet brakes are going to be slick. That's the theme of one of the new X5 commercials. Most of the new models (if not all) lightly actuate the brakes every few seconds when you run the wipers. It knows that if the wipers are on, the rotors are most likely wet.

1) Get better pads. BMW OE pads OR Hawk HP Plus pads OR other brand of pad that is street/track/intermediate. Stay away from Ceramic pads, haven't been a fan of them on the M3s.

I was thinking about Pagid RS421 pads. heard from quite a few sources that they work great for fast street/light track use. Do you have any experience with them? Maybe perhaps the Ferodo DS2500.

But i have to do more research :D

2) No slots, no holes, just original BMW or Brembo or other standard replacement is fine. I have the Performance Friction rotors (see bimmerworld) for my Euro 3.2L M3, and they work like a dream at the track without any of the typical floating rotor chatter that racing rotors have on the street.

Hmm, you think the Slotted/Drilled would me inferior for street use? I can see them eat through pads alot faster, but what the other disadvantages be?
Guess i'll stick with the stockers then, can't seem to find a Performance Friction distributor for Europe. Don't feel like smuggling brake-discs via plane :shifty

3) Wet brakes are going to be slick. That's the theme of one of the new X5 commercials. Most of the new models (if not all) lightly actuate the brakes every few seconds when you run the wipers. It knows that if the wipers are on, the rotors are most likely wet.

It just seemed a little extreme compared to other cars i've driven. Maybe it will improve a bit once i get the old stuff out.

Definitely didn't know about the self-actuating brakes. Learn something new every day :D.

Greatly appreciate your reply James