At the moment my summer set up is 9Jx20 and ET 35, running with Michelin Pilot Sports 255-30. Needs a few mm spacer to clear the front calipers but nothing needed in the back.
The car is not lowered (yet).
Now looking to get BBS CH-R 9Jx20 with ET 25 for all 4 wheels. Will keep the same 255-30's on this.
Maybe I will get a slightly wider version (9,5 or 10,5) with 275-30 for the rear wheels or would that be a silly thing to do?

http://konfigurator.bbs.com/article/...00001260001298