Did your M3 sway change much on your 135i ie more understeer etc? I have yet to throw mine on and don't want to drum up understeer. Some claim it does but your the only one I know with a post linear sprig, i.e. 2011+ that has tracked it on the ring etc... Not sure I get the best feeling from those stateside that talk of 60 mph off ramps as "high speed" drivin.
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