I have quaife LSD fitted to my JB4 M135i.
In comfort mode ie default when starting up, prior to LSD the TC light would come a lot on public roads here in the UK. 3 reasons
1. they are generally poorly surfaced;
2. it rains a lot here so bumpy surfaces are wet.
3. On stock suspension, rear of the car felt skittish and loose
Post LSD, TC light hardly ever comes on [even in the wet] so LSD is reacting before TC intevenes.
Even on wet, bumpy roads, rear end of the car feels more planted as traction is improved. Car now grips and goes.
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Fettled M135i EB AT - gone but not forgotten:
AW M2 DCT
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