 Rambai muchinyora ndima ino - Kusawirirana pakati pemapoka nevatungamiri vemutambo pamusoro pemitemo yehunyanzvi yemwaka wa1981 weFormula One kwakabatsira kuti Goodyear ibve kwenguva pfupi muFormula One uye zvaireva kuti 1981 South African Grand Prix yakaitwa nemapoka kumitemo ya1980 vachishandisa mota dzine masiketi anotsvedza. Piquet akapedza wechipiri muBT49B, asi mujaho uyu hauna kuverengerwa mukombe. Mwaka chaiwo wakavhurwa neUnited States Grand Prix West, uko BT49C yakaunzwa. Kushamisika kwechikwata, ndiyo chete motokari yekushandisa zvakajeka kuputsika mumutemo mutsva wekubvisa pasi nekuzvideredza, asi BT49Cs yakamhanya neyakajairika kumiswa mushure mekunge hydropneumatic system yakaramba ichitsvaira. Chikwata chacho chakaramba chichigadzirisa nzira yacho mumakwikwi matatu akatevera uye chakaishandisa kuti chiwane nzvimbo yepamusoro muBrazil neArgentina Grands Prix uye kukunda muArgentina neSan Marinoasi achiramba achitambura nokusakwira kana kudzika zvakanaka kwegadziriro yacho. 