i actually tested this, i was actually tring to compare hubcaps to hubcaps taped smooth, but i figured i'd throw in no hubcaps.
the results, the data is a lil messy but i was not able to show any significant difference between the untaped to taped hubcaps. however, no hubcaps showed about a 1 1/2% loss
http://ecomodder.com/forum/showthrea...ard-28594.html