also what kind of pads should i get?

bump

The 6.3 had 4 wheel discs with vented rotors.

I like PBR (REPCO) dustless pads. OEM are fine too.

kmaysob I have the rotors in the 2nd picture on my car now. The reason for the slots is to let gas escape that is formed when braking.

But the real reason I have them on my car is the wow factor. You can see them threw my rims and they look cool.:cool: A lot of my friends have done a double take on them.

I have a little experience with this, though not on a Benz. I had a Mazda 323 GTX (4wd turbo car) that had warped rotors in front. I replaced with drilled/slotted rotors. There was no improvement in braking, though the rotors did not warp again.

What I learned later is that warping occurs when you come to a stop after braking hard, and the hot pads sit against the rotor, keeping that part of the rotor hot while the rest of the rotor cools at a different rate. Slots and/or holes allow the entire rotor to cool at a more even rate.

I also learned that the most important factor for a braking system to work well is the ability for the rotor to store heat. So what you want is lots of mass in the rotor, and drilling and slotting removes mass, thus diminishing braking ability.

I would agree with the folks above who suggested going with a larger size stock rotor, if possible, and preferably vented, and maybe get them slotted at most, which will help the gas escape between rotor and pad. I've read that these slots also help clean off the surface of the pads to maintain a better braking surface.

As for pads, the best I've ever used is Porterfield R4-S pads. Don't know if they make them for Benz cars, but they are truly incredible pads with great stopping ability, great bite when cold, no dust and long wear. They are pricey but worth every penny, IMO. Check it out:

www.porterfield-brakes.com