Originally Posted by MrHarris
"Vorsteiner's GTS3 bumper serves both form and function. It will add an aggressive aesthetic to your E90, E92 or E93 M3, and will direct more air to the radiator and brake ducts than an OEM bumper, all while increasing downforce at high speeds. "
Our cars don't even have brake ducts do they???
Originally Posted by lucid
I wasn't sure how to interpret that line either. How exactly is "more air directed to the brake ducts" when they don't even exist?
The driver side opening in the fender is for the intake. If they made that opening larger so that there is an opportunity to channel some air into the wheel well, maybe I can see what they are saying, but that would also require cutting a hole in the fender liner and so on.
The passanger side opening is for the transmission oil cooler, which already vents into the wheel well.
Then, there is the question of what blowing some air into the wheel well accomplishes exactly in the absence of ducting to a modified back plate. I am sure it does something, but I don't know how significant that can be.
I am sure that line was written by JLewi ... sounds like them ...