 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 wacho wakazaruka neUnited States Grand Prix West, umo 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 ichi chakashandura hurongwa hwacho nguva dzose mumakwikwi matatu akatevera ndokuhushandisa kuti vawane nzvimbo yepamusoro muBrazil neArgentina Grands Prix uye vakakunda muArgentina neSan Marino vachiri kutambura kubva pakusagadziriswa kana kudzikiswa zvakanaka. 