Strut braces revisited:Bimmer Mag page 32-33 DEC 2002
"The difference you'll feel is mainly in your wallet. a strut brace aids in maintaining structural rigidity under very high conrnering forces. "very high" means those generated during autocrosss or track events, especially using R-coupound tires and inconjunction with other high-performance suspension parts such as high-performance springs, shocks and sway bars. on the street or on back roads, it is very difficult if not impossible to achieve the level ocrnering force where the bendefits of a strut brace might come intoplay. It will basically just sit there and look good. "