Quote:
Originally Posted by pokeybritches
I'd forgotten that you drive an automatic, but you can put whatever final drive ratio you'd like back there... 3.91, 4.10, etc.
The grinding issues you read about are probably related to guys who fitted the Dinan LSD on the Z4M. Those were corrected by Dinan, so it was more of a hassle than anything else. There are many, many companies out there that build a quality LSD. You don't need to be at a track to realize its performance benefits. Search for "limited slip" or "LSD" and you'll get some good info.
With regards to rotors, you can buy slotted or drilled rotors separately that fit the OE system to give you the look you want.
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The Dinan are the ones I read about.
