2001 brake rotors: mysterious extra fasteners

[lo_jack]

I was wheels up on the first rotor about to do new rotors, pads and a bleed.

The runout on the rotors is horrible; I think they are the original rotors.

Per the walkthrough I get to the part where there is a hex or star fastener holding the rotor onto the hub. I pull that and try to get the rotor off. No luck. Upon closer inspection, there appear to be two more fasteners like the hex fastener that hold the rotor to the hub, but they have no tool hole! They are just blank, flat surfaces. There are two of them, exaclty the same diameter of the one that is supposed to be there, exactly the same distance from the hub center as the one that is supposed to be there.

Is this possible? Are there really two drill out only screws in these rotors? If I had pics I would share, but I do not.

One other thing - the brembos I got to replace these do not have extra holes for more fastners, just the one.

[vegasX5]

On mine, there was only one fastener. Some earlier models had more than one fastener if I recall correctly and the blank surfaces on the new rotors are just where the holes would have been punched for the older models. After I unscrewed the hex holding the rotor on, I had to use a rubber mallet to smack the hell out of the rotor to get it to come off.

[fast4d]

there's only one hole/scew. if the rotors are not coming off you need to bang on it with a mallet. the hat is probably rusted to the hub.

[BimmerDude]

I agree. Smack the hell out of it, it will loosen. I did my brakes last year and I had to smack them around a few times. At this point lube everything up, since your down there. GD

[X5 in AK]

Smack away. Use aluminum anti-sieze on the mating surfaces during reassembly to prevent that problem in the future. Good idea to use anti-sieze on your wheel to hub mating surface too, I've seen aluminum wheels not want to come off due to corrosion.