Well...I have the 18mm bar on....or is it 20mm? I'm not sure...coz there's definetly oversteer. I thought 18mm would give you neutral handling. Oh well...the bar didn't have any label on it. It looks much thicker than the 13mm. The michanic thought it was 20mm. I guess I'll find out it's lighter outside so I can measure it.
BTW, the handling is freaking AMAZING! I never knew what I was missing! Holy cow!