low·rid·er or low-rid·er or low rider (lō'rī'dər) n.
Chiefly Southwestern U.S.
A customized car whose springs have been shortened so that the chassis rides close to the ground, often equipped with hydraulic lifts that can be controlled by the driver: "a 1964 Chevrolet Impala low rider belonging to Clemente Fuentes, who can make the car rock and wobble like a conga dancer"(Edmund Newton).