Dude listen, you have a 335i now, and you want jump ship to a 328i. This is going to be one BACKWARDS move both FINANCIALY and in terms of cars
. From what you said above you still have payments on your 335i (for how ever long) and you want to trade this car in and finance a 328i for FIVE YEARS at a higher car payment. Why would you want to finance a car for FIVE YEARS, it sounds like you really cant afford these cars, and I don't mean that in a disrespectful way at all. That's just backwards man, your going to be upside down on a car, and who's to say in like 2 months you wont miss the power of the 335i. If I were you I'd stick with the 335i and just buy the black seats you'd come out cheaper that way.