I think the widest front our community has confirmed so far is 245
http://e89.zpost.com/forums/showpost...3&postcount=18
One semi obvious thought is you might want to measure the tire you are using. The 235/265 dunlop zii I'm using now run more than 10mm wider than the stock 225/255 RFT and at the clearances you are describing, the difference between stated and actual might make a difference