[Semi Pro]

rules depend on ware you race, normally there is a min weight as well as tire size rules, 2mm will make the body look odd, look at ABC Hobby for a nice cheep 4wd mini

as for how they compare to 1/10 4wd, they are alittle slower but if its just black top racing with very little rules like we do then im sure with some skill and a hot setup it can be just as fast