less throttle is more with plastic tires, the less speed difference between the tires and the ground the more traction the car will have. my first stock tires on my xxx-s drift-r were a hard rubber compound and it was really hard to drift, then i tried some cut ABS pipe, and i broke a rim (not a strong setup on rough concrete). i now have some ones that have a plastic center with rubber sides, and came on really strong rims that have taken a serious beating as i like to go from sidewalk to parking lot as a transition from time to time lol. these are the ones i bought, dirt cheap too. http://cgi.ebay.ca/ws/eBayISAPI.dll?...MEWNX:IT  and he's got lots of other rim styles too.