Kammala jumla mai zuwa: Da zarar an tabbatar da samar da kayayyakin gyara a tsakiyar kakar, an gyara B186s don haɗawa da dukkanin sabbin fasalulluka na iska (gami da fuka-fuki na gaba da na baya da kuma gyaran jikin jiki), sabbin kunshin dakatarwa, da kuma sake fasalin ra'ayoyin saiti. An kuma karfafa chassis din don magance matsin da karfin injin BMW ya haifar. An kammala kunshin ci gaba ta hanyar isowar sabon ƙirar fuka-fuki na baya don Grand Prix na Austrian, inda ingantaccen aikin B186 da kuma tseren Österreichring mai saurin gudu ya sanya ta zama mota mafi sauri a fagen tare da Fabi (pole) da Berger suna zaune a layin farko na grid. Gasar motar ta inganta a duk lokacin kakar, musamman a lokacin rabi na biyu, sakamakon wannan ci gaba. Har ila yau, ya zama abin dogara, ko da yake wannan al'amari ya kasance mai shakka a cikin shekara tare da jimlar nineteen ritaya daga 32 farawa. Hakanan gasa ta tayoyin Pirelli ta inganta, kuma dangi mai dorewarsu idan aka kwatanta da Goodyears sau da yawa ya taka leda ga fa'idar B186, wanda aka nuna ta hanyar Berger ta lashe gasar.
1986 Mexican Grand Prix saboda rashin yin tsayawa don sabon saiti na tayoyin yayin da yawancin manyan masu fafatawa (ban da McLaren na Prost wanda ya gama na biyu) ya yi aƙalla tsayawa biyu don tayoyin saboda ƙarancin farfajiyar Autódromo Hermanos Rodríguez.