Car in sig, 16k currently, mods since 9k miles. Had to have the front differential seal replaced at 15k. Other than that no issues. Weird though as I had an 08 328xi that had a leaking front diff as well at about the same mileage. Must be a poorly designed gasket. Keep an eye on it if you have an xdrive car!
CURRENT--2014 2LT Z51 Corvette Coupe-7MT
PAST--2011 335i xDrive coupe-6MT-