Comparing: AMX 30 1er prototype vs. Lorraine 40 t

Developed as part of a competitive search for a unified European tank. The vehicle turned out to have maneuverability, engine power, and effective anti-tank engagement distance superior to all other vehicles except the Leopard 1. The armor of the vehicle was quite thin, but it was decided that technological advances in anti-tank shells had essentially rendered armor obsolete: survivability would depend on mobility and firepower.

A single prototype was manufactured in 1952. The vehicle featured suspension air-core tires and oscillating turret. The design passed trials but never entered mass production.