I am not sure about the offsets? Are you moving up or one or two tire sizes? I am no wheel expert but IMO having put non OEM rims on a previous car of the offsets are not correct they require spacers etc. I am sure one of the other guys / girls around here can help you out. If not try 'search' if you haven't already I am sure that there has been a thread previously.Seen some alloys I like for my 2011 slk r172 can any body see why these sizes would not be suitable
Cheers m8 for the info can you also answer another question for meYes, you do have that play for 8.0 and 9.0. As long as you don't think about 275 in the back and/or 245 on the front (in 18" that is).
Max size for 18" are 235 and 265 (ET becomes critical here). With 19" you can take it one step further but be aware that not all tires fit in the same way. Some stick out a little more than others.