See, here we go with that whole concept of "best" again. What works for one setup can be completely inappropriate for another. Sure, for a dedicated track car running race tires this might be the ultimate sway bar. That's way too much bar for street tires though and would likely lead to some nasty understeer.
Originally Posted by e46techtuner
The best sway bar to get on E46s is the BMW Motorsport 40mm. You can get it from Turner Motorsport for a little over 1k. I heard its what all the fast guys use.
04 IR 330i ZHP | ESS TS2+ SC | MagnaFlow "headers" | KMS 3.64 LSD | AST 4100 550/650| APEX ARC-8 18x9 | H&R front sway bar | Vorshlag camber plates, RTAB limiters | TMS subframe & swaybar reinforcements | UUC SSK & DSSR | UUC TM & TME | BW motor mounts | Dinan strut & shock tower bars | vaio 4-bolt oil pump