Quote:
Originally Posted by DuSh
Don't feel bad, 35i is a great engine still and a LOT more reliable than 50i
I changed valve cover gasket in n52 once and I think n55 (35i) is more or less same - relatively easy to work on and not as expensive to maintain, but I wouldn't even know where to start if something goes wrong with n63tu (50i). I basically live knowing that if something goes wrong after warranty - I'm done - as it will be cheaper to finance new vehcile than come up with $20k for 50i engine repair 
P.S. if power is what you are after - there' always a way to install a aftermarket turbos on your 35i - as size of turbos is #1 bottleneck on that engine. I would assume tho, since you have a new x5 it makes no sense to void warranty. Maybe after it expires, if you'll want to keep the car and make it fast |
Where do get 20K for engine repair? Exaggerate much?
I have the non-TU N63 in my E70, a less reliable motor than that in the F15, and I've spent close to nothing on it in the past 3+ years since purchasing it used. Basically been bulletproof.
Definitely agree the N55 is a great motor, but OP is bummed out on its power output and sound, and questioning its towing potential. You can rag on the N63 all u want, but it sounds to me it would have been a better choice for OP.