[dradernh]

Originally Posted by MerlinMc

For a little more than the difference between RWD and xDrive, I could buy an LSD. Was looking at https://diffsonline.com/bmw-f22-m240...l#.XGrh8uhKhZc

What are the thoughts on this LS differential (see link above)? I would get the 3 clutch version with the stock gear ratio. Any thoughts on the ramp options?

Also any recent thoughts/experiences on the vendor (diffsonline) also appreciated. My searching suggests that they are a reliable vendor.

Thanks again.

Dan Fitzgerald owns Diffsonline and is an excellent aftermarket vendor - I can recommend him without reservation. He's done a number of diffs for me for various cars. He may ask why you want a 3-clutch pack diff if you're not going to the track (or he may not). Note that he gets busy as race season gets going. Although, the last time I was in there he'd hired an assistant, so maybe his turnaround time in the spring is shorter than it used to be.

I go to the track and Dan recommended the Wavetrac; given that mine is a street car, I would have been surprised if he hadn't. If you do go with a clutch-pack diff, you may want to ask for the expected length of the rebuild intervals - that's something I'd want to know, anyway, along with the cost of a rebuild.

Originally Posted by XutvJet

The MP LSD is a very high quality clutch based LSD built by Drexler for BMW. It is a great setup for street and light track duty. It's also a warrantied unit and a hell of a lot cheaper than anything from aftermarket vendors.

I paid a discounted $2,235 shipped for a Wavetrac - so, probably not that much different compared to a discounted M Performance unit? I think someone here said he got an M Perf unit for $2K from one of the dealers that discounts aggressively - no idea if that included shipping.