Thanks folks.
Those are 40series road rage tires. You can get them at pretty much any hobby shop. I got mine online at towerhobbies. They're great for pavement, corners on a dime as long as I'm not WOT.
Edit: on another note, just got back from a run and it didn't last long lol. Nothing overly bad but I blew out both ends of a front tierod (easy fix) and my tranny won't shift to 2nd gear. Did the .15's have a 2 speed trans? That and my buddy was having issues with his savage so I leaned it up a bit, she woke up and he wasn't ready for 2nd gear so he slammed on the breaks and it slid straight sidways into a dumpster. Blew the gas tank wide open. Day over.