This is a concept for a heavy duty rim and tire that has been modelled 1:1 scale in Inventor. I have exported the assembled wheel as an obj and mtl file for those who would like to use the components in either games or other purposes. I have also included the IPT and IAM files for those who'd like to tinker with the design in Inventor.
OBJ (OBJ, filesize: 2.44 MB), IAM (Autodesk Inventor, filesize: 6.01 MB)