jlh28@work

I was driving through lots of rain today coming home from work in Atlanta. When I would hit deep spots my car felt as though it was slowing down. I am wondering if that is the quattro system braking the wheels that are losing traction.
Thanks

Jeff

nick n

That is normal for all cars. If you hit deep water you are naturally going to slow down or pull to the side. BTW you can still hydroplane and possibly loose control but your counteractions will be more effective with the quattro system.

markbradford

ESP and ABS control braking pressure.

Quattro only functions to transfer POWER to the wheels that have the most traction.

jlh28@work

Thanks guys. I thought I read something about the braking system being used to reduce wheel spin

markbradford

That occurs on lesser systems, like the one BMW uses. Use brakes to force power to wheels w/ trctn.

Wir fahr'n auf der Autobahn

Quattro uses the brakes if there is a wheelspin difference on a single axle. So if the wheel on the left front is faster than the right front, the ABS system is engaged to slow it down.

markbradford

This is not true.

Wir fahr'n auf der Autobahn

From what I know, there's no true LSD's at all on the rear and front, just open differentials. So basically, EDLs are used to slow down wheels. And EDL's are basically a fancy description for what amounts to a substitute for a real LSD, using the brakes to slow wheelspin. I also read that at one point, there was another Torsen in the rear on an older system but was dropped due to cost.

Correct me if I'm wrong.

markbradford

I stand corrected - you are right. For lateral distribution of power when traction is lost = EDLs.

CK NYoC

what is the power distribution btw the front and back????