Flutter Scout R/C car modifications

Notice:
The Flutter Scout RC Car is created by Alexander Taylor and all the credit goes to him.
https://github.com/tlalexander/Flutter-Scout
https://makezine.com/projects/3d-print-badass-rc-race-car/

So I liked the concept, but if we are 3D printing a R/C car why buy expensive bearings and tires when we can 3D print bushings and wheels and tires.

Note: Print the tire, then flip it 180° in x or y to get 2 that match when you put them on the car.

Front wheels and associated parts are