Yours are still new enough, you may be able to get a good price selling the tires on Craiglist and buying the low resistance ones. I see people selling tires for high prices all the time. I can't tell you if they sell them or not but it may be worth a try.
Hatch Nation #13 : Rally Revolution #13 : ROTM Jan '13
It's Bryan, not Brian
RSVT-170 Build in Progress
Derusting Rusty Build in Progress