The body roll was designed in to fix a fault in the W115 chassis (along with a change from double wishbones to the C111 suspension). The W115's corner so flat and well that it is very possible to force the ouside front tire from the rim before the driver knows he/she is approaching the handling limit of the car -- actually, that the tire bead is approaching the limit.

By allowing more rear body roll (it's mostly back there, by the way, the inside corner lifts), some roll oversteer occurs, causing the driver the unload the front tire by reducing the steering angle.

You could always make or find a sports sway bar, but you will then risk running the tire off the rim without warning. It isn't possible to "recover" from this little event -- the car will travel the tangent of the turn, driver will have no control. Not funny, I know someone it happened to. Fortunately, there wasn't a tree or telephone pole in the path of the car.....

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!