Anyone know the widest possible rubber for a w202, specifically a C43?

With the right wheels and offsets you can get 245 in the front and you should be able to get 275 in the rear. I run 245 front and rear.

I am running 255 18 35's on a 35mm offset, but like MTuner said you can go larger with right offsets.

Anyone know the right offset for 275 in the rear?

A certain member of this forum was able to put 295 in the rear of his C43...but I don't think that lasted too long.