FWIW - I have 285/60 x 16 Eagles on mine. And I like the ride. Yes, they are oversize, but I haven't replaced them in over 60,000 miles, and probably still have 10,000 to go.

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Thank You!
Fred
2009 ML350
2004 SL600
2004 SL500
1996 SL600
2002 SLK32
2005 CLK320 cabrio
2003 ML350
1997 C280 Sport