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JCL · #2 09-28-2008, 09:51 PM

Well, I'll start.

BMW does not recommend turning rotors. You can do so, but there isn't much meat on them, so I wouldn't bother. Depends how much your time is worth.

You don't necessarily have to replace rotors every time, but keep in mind that it is not the minimum rotor thickness at the time of the brake job that you need to be concerned about, it is whether the rotors will reach that minimum thickness before the new pads are worn out. I just replaced my rotors, it was easier. I didn't want to go back in and do rotors soon after the brake job.

IMO, you don't need a brake upgrade. Most are cosmetic. The standard brakes are pretty good. If you want to do anything, replace the flexible brake lines for a marginal improvement in pedal feel.

I like Axxis Deluxe pads (Axxis may call them something else by now). I don't think they are really a ceramic pad, but opinions differ on that. Some would call them a ceramic pad. I think of them as an organic pad with additional ingredients. They work great, minimal noise, no dust, and a pedal feel very similar to stock.

Brembo rotors are highly over-rated IMO. They don't represent Brembo brakes, they are just a rotor. If you are going to a top hat design, with multi-piston calipers, then fine. If not, don't pay $$ for a name. If you aren't replacing calipers, go with standard OEM rotors, or possibly Centric. I have used aftermarket rotors, and some rust more than OEM. Centric look pretty good to me, but I haven't used them. I have heard good things about them.

You can get the pads and rotors at Zeckhausen, a board sponsor. I found them to have great service every time I dealt with them.

Make sure you replace the sensors (LF and RR). You can try and reuse them, but they go brittle over time. Get these at the dealer.

Let me know if you have any specific questions, and make sure to check out the DIY articles on brakes on the X5World home page.

Good luck.

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