Originally Posted by Rick Hohwart

I'd say the main thing is to run stiffer foam in the stock tires. I ran AKA medium and the car was hooked up with a 17.5 and probably could handle the 13.5 that I could not hook up with the standard foam.

Originally Posted by reenmachine

Just to clarify, is it the 34001M 1/8 buggy mediums, like these?

http://www3.towerhobbies.com/cgi-bin...?&I=LXWWA3&P=7

Originally Posted by Rick Hohwart

yes