Originally Posted by thung_mail
what is LSD. never heard of it before.which models of bmw are offered this feature. i dont think my drive has it
Limited Slip Differential. Its only available on M cars I believe. This guy must have aftermarket LSD. Unless your car is x drive its basically a 1 wheel drive car without lsd which is one reason they are so bad in snow. Everyone here that says today was fine with rwd and winter tires has a strange definition of fine. I saw a few stuck on very slight grades. I never would have made it through my Sons school parking lot in mine.