Vehicle Master Semi-Trailer Suspension Types German and American types trucks of mechanical suspensions are available for Mastervim semi-trailers. American-type leaf spring size is 8x75x13mm, with a capacity of 25,000lb at 11 tonnes, 13 tonnes, and 16 tonnes. Germany-style leaf springs have capacities of 12, 14, and 16 tonnes, respectively. German https://www.horseandcargotrailers.com/product/vehicle-master-semi-trailer-suspension/