Whakaotihia te rerenga e whai ake nei: I muri i te pakanga, ka hoki a Bira ki te whakataetae me etahi kapa. I te tau 1951 i whakataetae ia i roto i te Maserati 4CLT tawhito i whakauruhia ki te miihini V12 Osca hou. Kāore he hua i puta i tēnei tau nā te kino o te mahi a te motokā i honoa ki tētahi aitua nui. I te tau 1954, me te motuka hou, he Maserati 250F, i wikitoria ia i te Grand Prix des Frontières i runga i te ara ara Chimay ka mutu ko te tuawha i te
1954 French Grand Prix me tana ake Maserati. I te marama o Hanuere 1955, i wikitoria ia i te New Zealand Grand Prix i Ardmore; i reti ia i te mutunga o taua waa.