It’s scripted file for visualization different metric tire sizes
E.g. 175/70R13, 205/55R16, 325/25R24.
Width range: 135…355; Profile range: /25…/80; Diameter range: R12…R26
You just must run script “MAXScript”“Run script…” choose “size.ms”.
You can change tire parameters by Dialog Window or by Manipulators on Viewport (by “Select and Manipulate” tool)
175/70R13 mean:
Tire width: 175 mm
Profile height: 70% by width (122.5 mm)
Tire height: 13” (330 mm) + 2*(Profile height) = 575 mm