Bigger e34 Brakes- update info

[genphreak]

I've been doing some research, dug up some new stuff so I thought you all might like to know.

Did anyone know that some e32s use a 12mm solid rear disc? I've never seen it mentioned but perhaps this is why there is some misunderstanding re e32 rear components (I keep seeing people trying to sell e32 rear calipers that will not fit e34 on eBay). I expect that it is impossible to make parts from the cars that come with the 12mm setup (ie 735i/il) fit an e34 as it never had a 12mm rotor and one cannot use the e32 rotors on the e34- I've never seen why not, but suspect it is a mounting difference- perhaps they widen the track or simply don't fit? Is there a hub difference... hmm more squirrelling required on realoem perhaps...

Anyway I wanted to clarify all this and in doing so I found that Bruno's page could do with a little update, so have sent him the table below, and hopefully he will. Any comments (especially on inaccuracies and additions) would be appreciated by me, Bruno and everyone that ever decides to do this to their car...

BEWARE- Below are 2 images crammed into 620x280/19.5kb of space-
The first is for the front brake parts and the second (below) for the rear brake components.

I have suggested to Bruno the following clarification on Rear Brake upgrades:
E32 rear rotors will not fit the E34. However the 750i/il, 740i/il (and 540i) calipers and carriers can be bolted on the E34 when used with 540i rotors. No E31 rear calipers fit the E34 but the 324x12 non-ventilated rotor does. Everything in the table will fit (except where stated):

I didn't look into the M-car brake components much (I was just researching the e32/e34 part similarities) as I have no experience with them and I thought that Bruno would (no-doubt) have them very well covered in his page already.

Nick

btw Erich, there is one version of the 750 (made only for the Japanese market) that uses a slightly different front brake arrangement than the rest- and I didn't add it as it is not applicable to any others... and no doubt you know which one already..