It is said that the leaf-spring suspension is the oldest suspension used for automobiles. The leaf-spring system was used more recently in '70s production cars, some of which are still in service ...

Why does anybody use air shocks with full-size trucks? Fox says a 2.5-inch air shock has a spring force of 750 pounds per inch at full pressure, which means it's OK to hold up my truck's 5,000-pound ...