The TL-01 is a very narrow car, Tamiya actually make axles to widen it. Axles part number 50808
have longer screw threads, designed to be used with the 12mm long hexes which are spare parts included with the TL01 toe in rear upright, part number 53345
. These will move the wheels out 6mm on each side, but if it's too wide you can cut down those longer hexes or swap them for something narrower.