For cheap but useful tires, we use the Performance Cycle Gothom 26x1.75 street tires. I've gotten them as cheap as $12.00 each, decent life and a hard rubber center so there good at flat protection, we do use STANS flat protection fluid in our's to make them even mort flat resistant. FYI.
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Take Care, Ride Safe, have FUN! :)
Jo: 2009 ICE Trice T
BJ: 2011 ICE Sprint Special Edition