Light-duty trailers, such as those that occasionally carry one piece of equipment, usually go from 4 feet wide by 6 feet long up to 5 feet wide by 8 feet long for smaller sizes. Small trailers haul less weight than other sizes based on weight ratings.
For example, a 40.5-by-48-inch trailer from Harbor Freight Tools hauls a maximum of 1,090 pounds. Customers must add their own large piece of plywood to make a flat surface. The entire trailer weighs 151 pounds. U-Haul's 4-by-7-foot small trailer carries up to 1,770 pounds for landscaping projects and can be towed by cars. The open trailer weighs 660 pounds.
TrailerSuperStore.com has lightweight, small trailers for sale that can be sorted by price. The smallest trailer for sale, as of April 2015, can carry 1,650 pounds and is 5 feet wide and 8 feet long. Another trailer carries 1,600 pounds and is 8 feet long. A landscaping trailer with a capacity of 1,120 pounds has an empty weight of 380 pounds.
Trailer size requirements vary by the weight of the cargo. The weight rating of trailers assumes the cargo weight is evenly distributed among the trailer. Most small trailers have one axle with two wheels.