If you want the best sways, get the Comptechs, they are worth it. If you want a good bang for the buck, I guess the TL-S/CL-S sways are good.
I own a TL-S and swapped my stock sway bars for the Comptechs. The Comptech bar is thicker than the stock TL-S bar was both in regards to its overall diameter, and its wall thickness; all of these sway bars are hollow, not solid.
The Comptechs made a very significant difference in how my TL-S handles, and all the TL-S owners who put them in agree as well. The $299 (front and rear) I spent on them was very well worth it. The car really should have come with these sways from the factory, and they were truely worth every penny.
I dont see how anyone can say that the Comptechs if purchased would be bought with a disregard for price, or that some people wouldn't benefit much by going with the more rigid Comptech set up. My TL-S definitely handles much better and doesnt wallow like a pig anymore around turns. Ive had the stock TL-S sways and now have the Comptech sways, and trust me the difference is night and day on my TL-S.
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Just call me.............Mr Hyde
03 Topaz Blue 540i M-Sport
The TL-S / The 540i