Poly RTABS or Rubber OEM RTABS Lemforder
I have powerflew rtabs in my 03 m3 ad I haven't had a problem since I installed them two years ago. You won't notice too much difference between the stock and poly unless ur really pushing it. That said poly will last longer than rubber which is a big reason why I bought them.
I also bought PF FCABs and so far they have been a disappointment. The passenger side has been riding up the control arm. I have to reseat it and see if it works.
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