Thread: 91k for a 550?
View Single Post
  #57  
Old 11-18-2012, 11:17 AM
Needsdecaf's Avatar
Needsdecaf Needsdecaf is offline
Everything's Bigger in TX
Location: The Woodlands, TX
 
Join Date: Sep 2006
Posts: 7,111
Mein Auto: 2007 MDX
Quote:
Originally Posted by Alpine300ZHP View Post
I understand. My N54's all had a ton of issues. It was the faster motor (because of the two small turbos), but it was also the more problematic motor. The N55 is much more reliable from what I can see. This is part of why I traded the 08 535i for the 11. The 08 had quite a few issues and I was getting tired of dealing with it.
Yeah, I remember Car magazine having to replace a turbo on their long term tester. And then the zillions of HPFP issues. Well, I just didn't want to do the brain damage.

The N54 is definitely the stronger motor. However, one reason I believe most people think it FEELS stronger is the transmission. Think that the N54 had the 6 speed auto and the N55 is paired with the 8 speeder. The 8 speeder shifts more often and keeps the revs a lot lower than the N54. As a result, the N55 spends a lot of time below 2,000 RPM, and most people think it feels weaker.

Compared to the 6 speed auto, the N54 actually gets a chance to stretch it's legs.
__________________
2011 535i
Sophisto Grau / Oyster - Black Nappa, Anthracite Wood Gone but not forgotten.

Heaven is where the police are British, the cooks are French, the cars are German, the lovers are Italian and it is all organised by the Swiss.

Hell is where the police are German, the cooks are English, the cars are French, the lovers are Swiss, and it is all organised by the Italians
Reply With Quote