Whakakihia te rerenga e whai ake nei: I te tau 1979, he nui te ahunga whakamua i puta i roto i te aerodynamics me te wero i a Lotus, i mohio a Forghieri me whai ia i to raatau arahi me te hoahoa i tetahi motuka paanga whenua mo te tau 1979. Ko te 312T4, i whakaurua i te
Ko te 1979 South African Grand Prix i tino rite ki te 312T3. Ko ona putake i whakaiti i te hoahoa aerodynamic mai i te raupapa T kaore i hangaia me te painga o te whenua. I hangaia te monocoque 312T4 kia iti rawa, kia pai ai te painga o nga paanga o te whenua, engari i aukatihia tenei e te whanui o te miihini papa 12.