Measure the diameter of your new 22 mm bar. A thick coating (1.5mm) on a 20 mm nominal thickness bar could make it measure out at 23 mm. If this is true, I would expect your new 22 mm bar to measure ~25 mm.
Originally Posted by driftflo
i just bought a M3 GT4 rear sway bar, which has a 22mm diameter (and comes from eibach, by the way).
the street cars should have a 20mm one.
when i recently measured the one in my 2012 E92 it was 23mm?!
hmmm... did they change the diameter in later (LCI) models?
if so, is the GT4 one still stiffer due to thicker wall thickness or different material?
or does this mod not make sense in a 2012 M3?