What bolts need replacing for new brake discs?

[pandaman]

I've got myself some new discs and pads, front and rear, that I'm going to fit this week. I'm just not sure which bolts/screws I should definitely be replacing. The caliper carrier bolts? are they the M14 spline/triple square bolts? and maybe the torx 30 that holds the disc to the hub? Just need confirmation, thanks in advance!

[rich83]

None. You can reuse them all.

[pandaman]

None. You can reuse them all.

Well that makes life simple, cheers!

[dronners]

might be worth having the screws that hold the discs on handy as a spare. if they come out ok then you can reuse them. but they can be quite easy to mash up

[Octoparrot]

I think the bolts that hold the caliper carriers on are stretch bolts and therefore are meant to be replaced although personally I wouldn't bother as there fairly large and it would take a lot to break them.

The rear carrier bolts are M14 triple squares and are a real pig to get at and are really tight, my advice is to make sure you can loosen these first before you start removing the rear calipers because I failed and ended up taking it to a garage, might save you time dismantling it all only have to put it back together again.

Replacing the bolts that hold the discs on is a good idea as it easy to round the heads on them, I always put some copper slip on the threads of these for easier removal next time.

[pudding]

Front carrier bolts aren’t stretchers 

Most people reuse all the bolts on the entire car.  The only bolts I won’t risk reusing are the engine mount and subframe bolts.  Ever since an engine dropped out of a car in Italy recently, VAG have come down hard on dealers where stretch bolts are concerned!

[rich83]

Front carrier bolts aren’t stretchers 

Most people reuse all the bolts on the entire car.  The only bolts I won’t risk reusing are the engine mount and subframe bolts.  Ever since an engine dropped out of a car in Italy recently, VAG have come down hard on dealers where stretch bolts are concerned!

^^^ What he said. My bolts are 11 years old and have had 4 different brake kits on them 

[pandaman]

Cheers guys, now I'm just waiting for it to stop bloody raining!