Originally Posted by rcracenut
Whats the recomended foam tire diameter for best performance?
For most, it's around 55.5mm (2.18"). For 2-stage Jaco's it's 56.5mm (2.22"). However, their performance with smaller sidewalls depends on the grip of the track surface and the overall setup of the car. Less surface grip and stiff suspension setup, among other things, may require taller tires.