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      02-06-2014, 12:06 PM   #30
Brian_VACsales
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Drives: E92 M3 VF Supercharged, 135i
Join Date: Feb 2011
Location: Philadelphia, PA

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Will not fit. The 3.46 auto final drive from a 2010 is physically smaller and will not bolt in. Read my FAQ, it explains everything with pics

Quaife gets my vote.

Quote:
Originally Posted by dcaron9999 View Post
Just found two diffs from 2010 135i automatic cars from a scrap yard in my area. This would mean a 3.46 ratio instead of the 3.08 in my manual 2011 135i, and a bolted diff, for a cheaper conversion.

Would this pumpkin plug'n'play, ie, bolts on directly to my driveshaft and halfshafts on my manual 2011 135i?

Any other caveats to look out for?

I will be soon placing an order for one of these, in order of higest to lowest preference:
1- Quaife,
2- Turner Motorsport 2-clutch LSD,
3- Turner Motorsport 3-clutch LSD,
4- Turner Motorsport 3 clutch LSD with variable ramp angles.
5- Wavetrac
6- OS Giken (special 75W250 OSG fluid is mandatory, which seems like a PITA)

Looking for a diff that will be quiet (for street use), robust (will track the car often), helps my 135i become more predictable on the track, and more predictable during winter conditions (nice-to-have).

Your thoughts?
Appreciate 0