what's the benefits of installing a custom LSD...?

[135iDCT]

I think the stock lsd ratio is 3.4 or more, the custom lsd is much less about 2.8 what's the point of making the ratios much less...? is this can avoid wheel spin at low speeds....?

[GeeRam]

Originally Posted by 135iDCT

I think the stock lsd ratio is 3.4 or more, the custom lsd is much less about 2.8 what's the point of making the ratios much less...? is this can avoid wheel spin at low speeds....?

What do you mean by stock LSD ratio...?

The 135i doesn't come with a LSD, only a E-diff with the use of the DTC button.

The final drive ratio of the DCT 135i is 2.56:1 (because 7th gear in the DCT is direct 1:1) and the final drive ratio of the 135i with 6MT is 3.08:1 (because 5th is direct 1:1 & 6th is an overdrive gear)
Aftermarket LSD (Quaife etc) can be fitted to either diff, but, both diff's use the welded crown wheel type unit, so arn't an easy install.