Two versions of the model are included in several 3D formats (FBX, OBJ, STL) A version is intended to be printable for scale modeling. You can scale it any size in the slicer software. There are also the OBj and FBX files for Computer Graphics work and rendering.
Another version is more sturdy and designed for RC cars tat use M4 lock nuts and 1.9 inch scaled tyres. With the backside engraved with the hex shape that is common in RC cars. These version also features the bolts in the 5 holes that would attach the wheel to the hub. For the RC I included a model that has slots on which the tyre woud be inserted to have them more securely fixed on the rim.