I have an SLK also. SLK 350. It still has the factory pads and they make a mess out my wheels. I already bought new ceramic pads for it, I just need to throw them in. I'm just not looking forward to having to bed them in.Mr stik makes a good point....the rotors today are ventilated and yes they get quite warm but most of us feel pulsating in the wheel and we call it "Warped rotors". To me, it's just a sign I need to open things up....not a diagnosis. When I raced bikes taking a bike/rider wt of 494lbs(on a good day) from 170-180 to 40 in a couple of hundred feet, I would swear I saw red but driving my lumbering truck at 70-80 ain't going to do it.....
I will go with OEM rotors & Ceramics. I've used ceramics for years on my SLK b/c they stop very well, don't behave differently in the rain and they don't leave brake dust all over my alum rims. I
jeff
MrSticker's post is correct. Most of the time rotors aren't actually warped. A lot of people don't pump their brakes as they're coming to a stop. This creates a build up of brake material that gets baked on to the rotor. That material will cause pulsing. If you start pumping your brakes versus riding them or holding them until you stop you can sometimes reverse the problem after a while.