Bugatti type 35 homage

This is a homage to Bugatti type 35 that I designed for my son.
I'm sorry for the pricy solution of the wheels assembly, I just had the fasteners from a previous project, it was the easiest way for me to finish the project. I shared also a STEP files of the wheel assembly so If you will have a better, simpler, and printable solution for the wheels please share.

The BOM from McMaster:
M5 insert X4 https://www.mcmaster.com/94459A180/
M5 Shoulder Screws X4 https://www.mcmaster.com/92981A148/
606 Bearing X4 https://www.mcmaster.com/5908K64/
M3_L12 PT screw X2 https://www.mcmaster.com/96817A370/
M2_L8 PT screw X12 https://www.mcmaster.com/96817A846/