Wikipedia
Tri-Five
In automobile parlance, Tri-Five refers to the 1955, 1956 and 1957 Chevrolet automobiles, in particular, the Bel Air, 150, 210 and Nomad. Revolutionary in their day, they spawned a cult following that exists in clubs, website and even entire businesses that exclusively cater to the enthusiasts of the Tri Five automobiles. All featured a front-engine, rear-wheel-drive layout. They remain some of the most popular years for collectors and hot rodders.