Just Me

(rears only).

Did the job yesterday. Easy, except:

i could not get the rotors off. Or not without using force that I didn't want to.

Are the rotors secured in any way except by friction and lug bolts?

The seam between the rotors and the hub is so fien that we could not be sure whether it was a seam at all, and therefore whether the rotors just popped off (hah!) or was actually held by the axle nut.

Grant

opm1s6

they were just stuck imo

groupbq

There are no retainers for the rotors, they rust to the hub. My right rear rotor has hammer marks on the wheel mounting surface, placed there by the dealer when it was removed. A liberal coating of anti-sieze will go on the hub when I mount my cross drilled and slotted rear rotors.

audikillsbmw

I used a rubber mallet on my rears....they didn't want to come off by themselves : )

Just Me

Thanks to all - apparently some forece and a fair degree of heat is helpful

opm1s6

check the back of the rotor, are there any other screws you missed? there shouldn't be any really. It's a floating rotor.

out of curiosity, parking brake is off right? you're able to seperate the caliper from the rotor? there are two hex bolts connecting the calipers to the axle, once you take those out, the calipers come out (assuming parking brake is off). I've been assuming that's all done and you just have a rotor that's stuck on the axle.

Just Me

If you look at the front of the rotor, the seam between the rotor and the hub is so fine that it is basically invisible. So, even though I suspected everything "you all" have said, I didn't want to pry/hammer/heat it if in fact it was attached by the axle nut.

Apparently its just rusted/ pressed in place. Heat should expand it and allow it to be freed in that case.

Since the rotors were really in pretty good shape, I just put them on the shelf for next time and put it all back together.

By the way - for anyone else doing this job, I somehow managed to get one of the pads (inside, left) crooked. Bad, bad. Handbrake did not work, brakes did not apply, and pad dragged, making that rotor.caliper VERY hot within 2-3 miles. Taking it all apart, cleaning, lubricating and re-assembling fixed it.

Moral: make sue the caliper is really free-floating very freely before you "close her up". The apply the brakes very lightly the first 1-2 times to ensure they all seat properly.

Grant