there are lots of "generic" brand tires you can get for cheap. I would trust new tires over a set of used any day. I used to buy Nexen N3000 tires, they are a "performance" tread, and they go for around 100 bucks a piece.... I've run some Riken Raptor tires for awhile as well. both lasted me a couple years and I never had any issues with them.