The older CRC kits came with Grey rears and Purple fronts, a decent tire choice, at least for carpet, certainly usable for learning. If that's what is included in the T Fource kit I would just use them.

Placing the battery on one side works but not nearly as well as using the Speedzone saddle pack. An excellent battery that brings all the advantages of running lipo to the t bar car:
http://www.speedzoneusa.com/estore/i...roducts_id=292
is shown as out of stock right now but they have always restocked so far