Sandy, you're use to drive Lincolns and Imperials. No wonder why you think they ride on concrete tires.
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This is true, BUT years & years & years ago I had GTO Tri-Power with the optional H.D. Suspension Pkg and it was more complacent and less fuss over road imperfections, than the McLarens (100% STOCK) are !!
I'd like softer springs with a panhard rod in the rear.
But none of them are D.D.s (daily drivers) so I can deal with it.
The current DD is the Town Car. My last Imperial was a 1982 and the only one tha I didn't like. I had 1968, 1972, 1974, 1975, 1978 and 1982. then switched to T.C. s. The McLarens are a nice place to visit, if ya don;'t stay too long.

or drive only on newly paved roads.