The rated Suspension Spring Capacity definition has been developed to assist engineers and designers in the preparation of specifications and descriptive material and values relating thereto. Purpose-The following definition of Rated Suspension Spring Capacity is applicable to all types of suspensions designed for vehicles used predominantly on the highway. This capacity providers a basis for comparison of spring load carrying abilities in a particular suspensions application. This definition is intended to clarify a commonly used term which has heretofore been used indiscriminately.