Mercedes switched back to 6.5J 15 inch wheels from the 7J due to ride quality issues. I think that happened around model year '89.

My SDL is definitely more punishing than either the 350SD or 300SE.

Body roll is annoying in these cars, as when you fling it around a right-leaning corner, you are nearly tossed out the driver's side window.

Seems to buckle down better at higher speeds. More control, perhaps thanks in part to inertia, and thanks in part to the nature of recirculating ball steering.

Riding in a well tuned 500SEL from 1984 with the 14" wheels is like riding on a cloud.

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1987 300SDL (324000)

1986 Porsche 951 (944 Turbo) (166000)

1978 Porsche 924 (99000)

1996 Nissan Pathfinder R50 (201000)