How do you  make a trailer ramp?
 Buy some heavy gauge metal plating or construction grade metal purlings for the trailer ramp. Do not buy thin sheet metal. The trailer ramp must be able to stand the weight of the vehicle plus more for safety. Cut the heavy gauge metal plating or construction grade metal purlings into two strips.Make each of them 4 feet long and 16 inches wide. This will accommodate more vehicle tire widths and trailer heights. 