I would advise against going more than 9 inches in the front. 275's are MORE than enough tire to be holding your front end to the pavement, and going any wider will most certainly cause you rubbing issues, especially at full lock.
Most guys on here run 245 to 275's up front, and 315's out back. Nitto's Extreme Drags run narrower than BFG's and Mickey Thompson's DR's so that's possibly why some have experienced no issues with rub out back. If you do intend on going with one of the latter 2, expect to do some small adjustments with quad shocks and inner fender "negotiation" A hammer is a wonderful negotiator, as Chythar pointed out