Originally Posted by BB_cuda
Do you do the 2011 335D (11/10 build date)? It has a ratio of 2.81:1 or there abouts. The website only showed 3.08:1 and higher unless i missed something. I would like to keep the dame ratio to continue getting 38 -40 mpg on freeway. A guy a little bit up thread asked about 335D also but i didn't see a reply so forgive me if this is repetitious.
All D's have a welding ring gear and there has not been any core availabilities so the only option is to machine your existing unit(3-4 weeks down time) or purchase a brand new final drive from BMW.