The 140's are very HEAVY and very tough on suspension parts, brakes and tires. The early pre-1994 140's all suffered from a "vibration problem." MB paid out in a class action lawsuit...you can findout more by searching the web. They replaced my ball joints twice on my 1992 500SEL, and as well as the tires.

I suggest you go to the larger P235-16's, they give more stability, a much better ride, and were standard on the V8 and V12 140's.

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Mercedes Fleet:
2004 CL600 Designo Espresso SPORT
2004 S600 Designo Espresso SPORT/Lorinser Pkg.
1999 S320
1988 300TE
1972 280SEL 4.5
Diesel Fleet:
2014 GL350 Blutec
1987 300SDL Blk/Blk 4 place seating #18 head
1987 300SDL Smk Slv/Burgangy #17 head
1986 300SDL Blk Pearl/Palomino #14 head w/ 280K
1984 Lincoln Mark VII Fact BMW Turbo Diesel