MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
I openend the rim and tyre in my sf3d slicer and it imports them both in center of plate. then slice and print so it print them both in once with PLA. maybe u can merge them both to make 1 model, but just import them both and slice works perfect.