Just to clarify incase of a future search.

I have a 2002 ML 270 CDi, facelift version with the OEM 255 60 R17 ET52 wheels.

I picked up a set of 19" W164 wheels with the 255 50 R19 tyres and ET60.

When trying to fit them they wouldnt clear the brake calipers by a long shot.
Turned out I had to use 20mm hub centric spaces and 80mm bolts with about a 60mm thread length on them. These were sufficient to get 7 good full twists by hand and then tightened a bit more.

I took some pics but please excuse the quality.

I hope this helps someone searching in the future.

Keith
Dublin, Ireland.

Before (OEM)



New wheels from W164 280 CDi



Spacers used (5x112x20mm thick)



Bolts used



Finished (needs good wash and polish I know, but I drive into building sites most days and today was no different!)