[Capt howdy]

Most cracking of the original aluminium flanges was attributed (by a BMWNA technical rep I spoke to off the record at a dealer body meeting) to overtorquing of the T50 Torx wheel lugs and brake disc mount area - still, they should not have.

That excuse was an attempt by BMW to weasel out of their responsibilities by blaming the customer, as they are known to do. I was meticulous in torquing the rear wheel bolts in at 60 Nm but still the flange developed cracks at all 5 holes.

 

[Beech]

Absolutely, German engineering can never be wrong. (though most of it is good)

 

[EricK1300GTSE]

Well, just verified with the trusty magnet and the photos kindly provided that my 09GT does, in fact, have the later steel final drive flange installed.

Thanks for this great forum and knowledge sharing.

 

[Two Wheels Better]

That excuse was an attempt by BMW to weasel out of their responsibilities by blaming the customer, as they are known to do. I was meticulous in torquing the rear wheel bolts in at 60 Nm but still the flange developed cracks at all 5 holes.

Customer? I didn't use that word.

I've watched well-paid techs in dealerships, who are in a hurry, swing a 14" breaker bar on that puny screw. Damn the torque wrench, full speed ahead.

 

[Capt howdy]

No I did.