how can i just replace the wheels??
The trucks are made of Delrin Plastic- a flexible yet slippery plastic. With a small screwdriver, one should be able to pry off the wheels from the trucks. fliping the car over, the trucks have a small grove where the needlepoint axle slips into the plastic truck. You have to pry the axle ends out of its socket and down this groove. Don't pry too much or you will risk snapping the plastic truck/sideframe.