black wheels give me slower lap times. I am serious, lol. White are also slower for me. I am fastest with flo yellow. I like the looks of white the best, but Flo is faster.....Why? because i watch my wheels when I race and black throws off my depth perception and white can be a little less noticeable on the track. Flo Yellow just pops and makes it easier to see the wheels at all angles. When i drive with black wheels I loose 1-2 laps... I am serious, lol.