Stripped rotor retainer screw

[JGood]

Whether you have the rotors resurfaced at a shop while they are still on the car

Say what?

[Bimmerman325i]

PB Blaster, Breaker bar, and a rubber mallet works great on getting the bracket bolts off. When I did the rotors I did strip the retainer screw, and while an extractor worked for part of it, I ended up going through a few drill bits until I bought a harder one. I then drilled the little bastard out, used pliers to remove what was left, and bought a new one from BMW to replace it.

[ducatipaso]

the brembo blank rotors included a new setscrew. thoughtful. :-)

[SpecM]

Say what?

on-car brake lathes, all the new rage. I don't like them personaly.

[ducatipaso]

on-car brake lathes, all the new rage. I don't like them personaly.

are you shitting me?

[2002maniac]

I dont even bother with these little bastards. One whack with a 5lb sledge to the rotor breaks the screw every time. I run wheel studs so I dont give a crap about aligning the rotor with the hub.

[Car Addict]

i love having a car from cali no corrosion or rust mine unscrewed just fine with an alan wrench.

[2Big4a3Series]

on-car brake lathes, all the new rage. I don't like them personaly.

Yeah, this has been the "preferred" method for quite a few years. Most of the nationally known experts advise that this is the only way you can avoid some of the common problems like warping, vibration, squeeking, etc. although I have not read anything directly from BMW requiring this method.

[Stephen]

i love having a car from cali no corrosion or rust mine unscrewed just fine with an alan wrench.

My car is calironian, the other 3 came right off, but that front wheel was already stripped when i popped the wheel off..

[Mike]

Supatek trick #12

OK, try taking two hammers, one big and one small (ball ping). Take the small ball and rest it against the allen hole, and then whack it with the bigger hammer. This will usually mushroom the face of the allen head down a little, causing it to bite down on your allen tool again. The shock of this process also will work those tight threads loose too....

[Madhatter]

you guys dont have impact drivers? they are cheap enough to buy and are perfect for this sort of thing. One whack with a hammer on the end, screw comes free.

Ohh, and the bolt through the rotor isnt so much about locating it on the hub properly, thats a given once the wheel is bolted on, its more about lining up the holes on the hub and the rotor so you can get a wheel bolt in. Since bmw use bolts, ever tried lining up the rotor, hub and wheel up to get a bolt in? if you even think about moving the wheel the hub will spin and it will be off centre (god I hate some european stuff using floating rotors without a retaining screw). Its already hard enough getting them in, a simple screw makes life a lot easier. It serves no other purpose other than this, no load transfers through it and it wont stop anything from moving once in use.

edit: oncar machining tools take into account run out of hubs and any play in bearings when machining. Off car are essentially cut on a lathe so the only run out encountered is that which may exist in the lathe (which should be nill). In machining probably somewhere around 5000 rotors, ive only ever come across 2 vehicles in which it was a problem. Both had a little more runout that I would have liked in a hub (within spec) and both used fixed calipers and rotors, so either works fine. On car just means you dont have to go to the trouble of removing all the brake components, in the case of things like 4wd's or those with hubs as part of the rotor, its a blessing.

[gazellebeigem3]

drill that shit out and hit the rotor with a hammer.

[ducatipaso]

you guys dont have impact drivers? they are cheap enough to buy and are perfect for this sort of thing. One whack with a hammer on the end, screw comes free

what I said :D

[ducatipaso]

http://cvfsupplyco-store.stores.yahoo.net/imdrhaheimdr3.html

[Madhatter]

yeah, I cant believe they dont have one.