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      04-03-2013, 10:34 AM   #12
CSBM5's Avatar

Drives: 2011 M3, 2001 M5, etc
Join Date: Nov 2005
Location: Raleigh, NC

iTrader: (1)

The larger front bar results in less roll and better camber angle for the front tires, and it especially results in better transient response (i.e. slaloms in autox). I pulled the alignment pins, max'd negative camber (got -1.7 degrees), and installed the Dinan front bar (btw, unlike others' experience, there was zero preload on my stock sway bar and the Dinan bar once it was in place, so I had no need for adjustable end links).

I'm running the car in F-stock this year, tire class, with BFG Rivals. So far, I'm very impressed with the car on course. I can't actually imagine it without the front bar as turn-in rotation was fine as is. In pure steady state cornering conditions (i.e. mid-corner), I imagine there is a bit more understeer due to the bar, but it's easily manageable. Slaloms are a hoot though! Also, this thing will really put down the power on corner exit -- really impressed with the M3.

When you do the install, take off those side pods on each side first and that will allow you to put a wrench on the weird wire supports (x2 each side) for the center undertray.
Current Stable:
2011.5 M3 sedan 6MT, Silverstone, slicktop
2001 M5 LeMans Blue/Silverstone
2006 330i 6MT Red/black, ZSP, Nav, etc
2007 328i wagon Silver/gray