That's what I'm guessing - barely noticeable effect. Just wondered from people who have them. I'll post results if I get them. Do the window deflectors actually cut down on wind noise at all, or is that just BS sales talk? I want them mostly for the vent aspect and the look.
2008 Colorado Z71 4x4 2LT Ext cab
3.7L I5 / Auto
265/75-15 Goodyear Wrangler Silent Armor