If you own BeamNG.drive on Steam, you can often access historical builds through the tab in your game settings. This is the safest way to "download" older versions without risking malware from unofficial "free download" sites. Open your Steam Library. Right-click on BeamNG.drive and select Properties . Navigate to the Betas tab.
To ensure you have a safe, working version with the latest features and official mod support, it is best to use official channels: : The game is primarily available on beamng 0406 download free