Strati Wheel 1/10 scale - fixed for printability

The Strati 3D printed car is a nifty thing, but the 1/10 scale model files they posted have some printability issues. The wheels are especially bad, so I have taken them and reworked them to be more amenable to printing and customization.
First I've turned the wheel to be flat on the bed. Radially symmetrical objects should always be printed flat, this way you don't get a flat spot and uneven distortions on the wheel. The flat side of the wheel is now the side that faces the inside of the c