One other thing to consider in your choice of PVC vs. ABS is the surface you will run on. I use PVC, but that's because I've been unable to find ABS at three local hardware stores. The asfault outside my apartment is very coarse. After a run the tires are rough. I went drifting at a parking lot last night where the pavement is smoother. I had a noticable amount less traction making it harder to control than I'm used to. The tires almost had a smooth polished feel after the run. Take a look at where you're going to be drifting. If it looks pretty smooth, you may want ABS... if it looks rough, you may want PVC. I'm already thinking about buying an extra set of wheels so I can have PVC and ABS drift tires.