cub scouts pinewood derby wheels

I haven't printed these yet, I designed them to dimensions I found online. I tried to make them "printable"... I plan to use them for a car I will 3d-print for the outlaw division to show kids what a 3d printer can do.

I just printed wheel2. That and solid are dimensionally incorrect. The axle hole is too large and doesn't print well without support. The are way more massive than the official wheels.

I just uploaded wheel3 and wheel4. Wheel3 should be closer to the actual wheel, but