I really love the look of those wheels, but I think they are hurting your fuel economy.
Not only are the recessed inwards to catch more air, but they also appear to be bent.
When was the last time that you had a wheel alignment ?
Off topic here : Here is a link to that Gale Banks T/A that we spoke about earlier. :
http://www.gtasourcepage.com/galebanksturbogta.html