Buuxi weedha soo socota: 1968, Cooper wuxuu jeclaan lahaa inuu ku biiro safka loogu talagalay Cosworth-Ford DFV, laakiin wuxuu dareemay in xiriirkiisa British Leyland ee leh Mini-Coopers ay taasi ka dhigtay mid aan lagula talin karin. Taa bedelkeeda, heshiis ayaa lala galay BRM si loo isticmaalo 3-litir V-12, oo markii hore loo sameeyay sidii gaari isboorti, laakiin BRM lafteeda ayaa adeegsan doonta 1968. Nooc yar oo wax laga beddelay ee T86 ayaa loo dhisay matoorka cusub, oo loo yaqaan T86B iyo darawalkii hore ee Talyaaniga ee Ferrari Ludovico Scarfiotti iyo ninkii dhallinyarada ahaa ee Ingiriiska Brian Redman ayaa loo shaqaaleysiiyay inay wadaan. Gawaarida ayaa ku guuleystay saddex-afar dhamaystirka
Spain iyo Monaco Grand Prix, inta badan mahadsanid aamin la'aanta tartanka, laakiin markaa Scarfiotti ayaa lagu dilay isagoo kaxeynaya Porsche ee Rossfeld buurta dusheeda iyo Redman wuxuu lahaa shil weyn oo ka dhacay Belgian Grand Prix kaas oo ka saaray waxqabadka dhowr bilood. Cooper wuxuu sii waday xilli ciyaareedkii isagoo wata darawallo kala duwan, midkoodna wax kama qaban karo T86B. Intii lagu guda jiray xilli ciyaareedkii, Cooper wuxuu dhisay shaashad wax laga beddelay, T86C, oo loogu talagalay inuu qaato Alfa Romeo 3-litir V-8 laakiin mashruucu wuu dhintay.