: These trailers were reworked from the ground up. Players can purchase and customize them with various chassis options, lengths, and articulated axles to haul heavy equipment from DLCs like Special Transport Heavy Cargo Viewpoints Expansion
Before 1.39, you could only haul lowboy trailers via external contracts. Update 1.39 allowed players to purchase their own lowboy trailers, paint them in company colors, and haul bulldozers, excavators, and industrial reels from their own garage.
Be very careful if you are searching for a direct "download" link on Google. Many sites claim to offer "American Truck Simulator 1.39 download" but are actually scam sites trying to get you to complete surveys or download viruses.
To summarize, the search for is not just about playing an old version—it is about finding the perfect balance between performance, mod availability, and core gameplay features.