[SF335]

I am planning to put an LSD into my 2011 335i 6MT and am debating whether to change the final drive ration from the 3.08 to a 3.46. It looks like doing the 3.46 is about $800 cheaper, which is quite nice. The car is my DD but will see a lot of track time.

I would love some input from those who have done this to get your impressions, how you use the car, and whether you would do it again/recommend it.

Thank you.

[feuer]

The reason why 3.08 cost more than 3.46 isn't the ratio. MT are welded and require more work to install LSD. Cut the main gear, mill it, drill it, tap it.....I have been tracking my 335i MT too and don't recommend changing the ratio because it will introduce the need for additional shifting and use of 5th gear. Now I use 3rd and 4th almost exclusively. Every additional shift will induce extra stress on the whole drive train. Also more work for me. So my vote is no.