91 M5 with 535i rear suspension? - The Unofficial BMW M5 Messageboard (m5board.com)

winstonbike · 1st January 2008, 04:49

I am taking delivery of a 91 M5 in a few days. The prior owner replaced the shot SLS with this setup from a 535i using new BMW parts ("sporty" versions)

http://www.realoem.com/bmw/showparts...34&hg=33&fg=45

What do you think? The proof is in the driving I suppose, but as this is my first M5 am I leaving anything on the table? On paper, it seems like an OK choice on paper. Anyone have a similar setup and have something to say?

Thanks

Mtechnik540i · 1st January 2008, 05:55

Interesting, I've never heard of these springs.

I wonder if it's what was fitted to Sport Package models or something.

Alan Archer · 1st January 2008, 12:50

In the UK at least we had a version of the 535i
called the 535i sport.
It had "m-tech" suspension which was a firmer set up over
the stock saloons...hence the choice of springs.

Better you have these rather than standard springs on your car.

I went from a 535i sport to my M5 and the suspension was noticably stiffer
both in spring & damping...so it may be an idea to get the correct springs
when you can.

Regards,

Alan.

Geach · 1st January 2008, 19:52

Quote:

Originally Posted by Alan Archer

I went from a 535i sport to my M5 and the suspension was noticably stiffer
both in spring & damping...so it may be an idea to get the correct springs
when you can.

Regards,

Alan.

I did the same and immediately noticed the difference,the M is alot stiffer.
But as far as the 'correct' springs go,is this possible? As any M5 specific springs would be for an sls/edc application? therefore would end up 'softer',in theory?

Alan Archer · 1st January 2008, 23:24

Rear end deals with 100+bhp over and above a 535i,
so springs will be higher rate.
Both cars have SLS,
EDC varies damping / rebound control of the strut.
Springs deal with weight & load, both of which higher on M5.

Regards,

Alan.

Geach · 2nd January 2008, 02:19

I'll just keep quiet

I didnt realise that the sls was still in use.

Sebring NL · 2nd January 2008, 02:43

Also, the M5 has more weight out back because of the bigger thank

Geach · 2nd January 2008, 02:47

Was the M5 available without sls then?

Sebring NL · 2nd January 2008, 02:48

No, never.

Geach · 2nd January 2008, 02:52

I didnt think so,my point was that winstonbike is not going to be able to get hold of the correct M5 specific springs if sls has been removed? or am I missing something?