Limited Slip Differential

[stf05330Ci]

Trying not to sound too stupid, but I was reading something about LSD's and apparently my vehicle is not equipped with one? My car is driven by both rear wheels, corrrect? Also, both wheels are spinning during a burn-out, right? Go easy on me.

 

[Big Daddy]

This might help. Limited Slip v ASC

 

[Kirby]

The thread that Big Daddy posted should help clear things up. It is driven by both rear wheels, but in a burn out you will usually spin only one wheel unless you have LSD.

 

[stf05330Ci]

Thanks Big Daddy for the links. I was pretty sure I understood the differences, I was more or less just wondering about the wheel spin. I know that I do not have an LSD, so only one wheel spins during an "accidental" burn out? I feel jipped. Although the DSC, DBC/CBC and DTC functions work excellently and I'm happy.

 

[bmwrocks]

Wouldn't our cars benefit from an LSD? Why don't they have one?

Maybe it is because unless you get a real high quality one, it wouldn't live up to BMWs performance standards? And a high quality one would cost too much and raise the price of the car too much?

What do you think Big Papa?

 

[tom busby]

The M-cars get a LSD. Really, at the hp the non-M-cars have it isn't a huge problem. The M-cars have a clutch type LSD that is RPM sensing. A better LSD is like a Torsen (a/k/a Gleasman back in the day and recently sold by Bosch to Toyoda-Kiki) that is torque sensing because the rpm sensing type is already out of synch about 300 rpm before it kicks in.
For non M-cars, bigger tires solve the problem for better traction.

And BMW LSD's are really expensive. For example a Torsen T2R for a Camaro costs $600, a clutch-type LSD for a BMW costs $2,500. It doesn't make sense to me.