Printing Notes: -Must be printed in ABS or PETG, 4 perimeters all sides top & bottom, 20% infill minimum. .3mm thick layers. -The tire treads are printed in flex filament, as flexible as you are capable of printing at 100% infill. -You must reorient the files before printing, as shown in the yellow labeled images. All files print without supports except the cover, which I recommend printing upside down with supports to reduce the sag.