This same suspension system would be adapted to the DBR3 sports car which was being developed at the same time as the DBR4, but would be abandoned less than a year later when the DBR3 was considered a failure.
==Zasnova==O odprtokolesnem dirkalniku so pri Aston Martinu razmišljali že leta 1955, na hitro zgrajen prototip pa je bil testiran na dirkah v Avstraliji in Novi Zelandiji leta 1956, opravil pa jih je dirkač Reg Parnell.