[s-cars] BMW 530ix a UrS4 replacement?

[Gabriel Caldwell]

Delving in to my foggy memory banks I seem to recall that they added
more rear bias to the new RS4.  Perhaps Quattro is finally "fixed" on
that car at least.

Gabriel Caldwell


-----Original Message-----
From: Keith Maddock [mailto:keith.maddock at gmail.com] 
Sent: June 1, 2005 3:21 PM
To: dave flagg
Cc: Joe Petersack; s-car-list at audifans.com
Subject: Re: [s-cars] BMW 530ix a UrS4 replacement?

dave flagg <dfautohaus at adelphia.net> wrote:
> Why does NOBODY ever mention that fact that BMW's "all
> wheel" driveline doesn't even come close to the Quattro.

The E30 325ix, E46's, and X5 (pre 2004ish) all had a pretty crappy
triple-open-differential setup which relied on basically "Triple EDL"
to control wheelspin with the brakes when the  surface traction wasn't
even left vs right , or 38% front, 62% rear.

However the new 3 series, later X5's and the new 5 series have the
X-Drive, which is a very competent AWD system and I would rate it as
better than Quattro in several categories, espeically in that it has a
natural rear bias and is actively controlled to regulate
understeer/oversteer behaviour.   So far haven't seen "Quattro" do
that...

I'd be happy with either system, but I wouldn't take a older
triple-open-diff system unless I was really forced to.

Cheers,
Keith

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