As stated above, basically the SLS helps the rear of the car to be levelled in case is heavily loaded.

But that's really about it. I have owned three T's (one 123 and two 124s) and have driven several sedans of the same line. Almost never in any situation I could tell the difference in ride or handling with and without SLS.

The only time you can feel a difference, is when the SLS system fails and then your rear axle becomes a cement grave and the slighest hole will make it bounce up to the sky. Then, be prepared to mortage your house to pay for repairs. That is about the only difference with this set up and the regular springs.

I admit it, when the Ts were heavily loaded, the ride was smooth and competent. Although, this happened about twice a year. So, were is the advantage???

Thankfully, my S 500 L is Euro spec and does NOT have the SLS.

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A. Rosich
CL 500, 1998
S 500 L, 1998
E 320 T, 1995 [Sadly sold ]