Why me!?!? Snapped carrier bolt

Silverzedtom

Senior member
 East Sussex
Finished off my new discs and pads today - sort of anyway.

Went to torque up the carrier bolt on the rear and it snapped in half. Went in well by hand so it wasn’t cross threaded.

I read online that the torque spec for these is 110 Nm, anyone able to confirm?

Ill order some from the dealer and pop 8 new ones in so all carriers have new bolts.

Annoyed is an understatement.
 
I did the rear discs and pads on my son's R56 Mini. According to the workshop manual you have to replace the carrier bolts with new ones. Perhaps the Z4 is the same.
 
cj10jeeper said:
Fronts 110nm but I think rear is 65nm
Out of the country so cannot check manual
Correct. Just found it on TIS. How stupid can you get... did the fronts and assumed it was the same for the rears. Lesson learned :cry:
 
No worries - all done it. The bolt size is always a good indicator
Hope the remaining stud just comes out, which it should if it went in freely
 
These bolts stretch. You should replace them frequently if you also remove your calipers frequently. I changed mine a few weeks back whilst fitting new discs/pads. Got them from BMW Direct on Ebay.
https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F173007667259
https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F172780471810
:thumbsup:
 
patriot66 said:
These bolts stretch. You should replace them frequently if you also remove your calipers frequently. I changed mine a few weeks back whilst fitting new discs/pads. Got them from BMW Direct on Ebay.
https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F173007667259
https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F172780471810
:thumbsup:
Thanks for the links :thumbsup:

Hopefully they will rock up on time and I’ll be good to go again :driving:
 
Silverzedtom said:
patriot66 said:
These bolts stretch. You should replace them frequently if you also remove your calipers frequently. I changed mine a few weeks back whilst fitting new discs/pads. Got them from BMW Direct on Ebay.
https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F173007667259
https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F172780471810
:thumbsup:
Thanks for the links :thumbsup:

Hopefully they will rock up on time and I’ll be good to go again :driving:

:thumbsup:
 
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