Based on expert MX Bikes riders (community forums, OAT Racing League), the recommended use of the 3D Viewer involves a three-step cycle:
The primary draw of the 3D Viewer is its speed and accessibility. It effectively replaces the "edit-pack-load" cycle with a more efficient "edit-save-refresh" workflow. Model Support
: It allows users to view how their custom bike graphics (created in software like Photoshop) will look on the 3D model without needing to launch the full game.