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Originally Posted by bbnks2
Tough choice but moving to an AWD car seems to already be your decision... Did you run snow tires on your N54 ever? I have them on my RWD N55 and had 0 issues this past winter... easily got through stuff your average car couldn't on all seasons... Being lowered aggressively will get you stuck still though.
N55 issues are in-large the same as N54. Oil gasket leaks (oil pan, thermostat housing, oil filter housing), coolant tank explodes, water pump failure on pre- 12/2012 build dates, HPFP is shared between both except N55 gets newer revisions depending on build date... Main benefit of N55 over N54 is no injector issues and the motor itself has superior oiling and cooling. The addition of X-drive to the N55 negates those benefits though as far as reliability goes lol
N55 stock turbo will get pulled on hard by an n54 with stock turbos. N55 might have an edge on an N54 in lower gears, but over 80mph/3rd gear the stock N55 turbo just doesn't flow enough air. N55 does produce a good 500wtq as low as 2700rpms with a custom tune, so driving around town is fun. 350-370whpo is very doable on an E30 tune.
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Yeah, I have a dedicated winter setup, but coming from a G37x, the 335i sucks hard in the snow. We get dumped on where I live, and I regularly spend 30+ minutes digging my car out, to be able to even make it out of the driveway on days when it's bad. Perks of living halfway up a mountain in Utah...
Are you saying X-drive is less reliable? just more things to break with Awd?