In a message dated 2/13/2015 5:14:34 P.M. Eastern Standard Time,
lkchris@OSOGRANDE.COM writes:

Re:  which ML's had the 6.5 rims??   (JordanVw@AOL.COM)

That would be very basic trim W163 ML230 or  ML320, W163 being the 1998-2005
(first) version.  16-in  wheel

Doubt any USA models were ever so fitted, but could be  surprised.

this seems to be the case.   i guess the 6.5" wheels were only  offered in
europe.   anyway i left them on the car.. its a shame, they  were nice and i
could had them for $80 bucks for all four. (u pull it yards  around here
get $20 each for aluminum wheels)