I'm thinking of picking up an 2015 F30 335xi w/ 30,xxx on the clock. I had a 2013 w/ 37k I bought in Dec '15 that met an unfortunate end in March '16 due to a critter on the road.
Considering it's been another almost 2 years since I bought the 2013, has there been any other issues with the N55 and the AWD system that have reared their ugly heads with 2 more years of road worthy driving, winters in New England, etc etc.? I'm familar with the coolant issues and the charge pipe exploding on N55.
The 2013 I purchased was RWD, not AWD. I'm nervous about pre-maturely failing transfer cases or clutches slipping, etc etc. Also, I imagine snow wheels and tires w/ the AWD should make mince-meat of most snow storms?
Any thoughts?

Thank you!