<prompt> Qedela umusho olandelayo: Ngesizini ka-1986, uMurray waklama i-BT55 chassis ephansi kakhulu, okwakuhloswe ngayo ukunciphisa kakhulu ukumelana nemoto nokwehlisa isikhungo sayo sesisindo. I-BMW yakhiqiza injini ye-M12131, eyayithambekele eceleni ukuze ilingane nendawo encane eyabelwe injini. Naphezu kwezinzuzo zayo ezingokwengqondo, i-BT55 yabonakala ingenakho ukuncintisana, ihlushwa ukudonsa okungalungile nokwehluleka okuningi kwemishini okubangelwa izinkinga zokukhipha uwoyela enjini etshekile. Ngaphezu kwalokho, iqembu lahlushwa ukufa kuka-Elio de Angelis engozini yokuhlola ngemuva kwemijaho emine; indawo yakhe uDerek Warwick kanye neqembu elibuyile uPatrese bahola amaphuzu amabili phakathi kwabo sonke isizini. Ithimba le-Arrows nalo labuyela emuva, lafaka iphuzu elilodwa kuphela noBoutsen, Surer noChristian Danner, futhi laphinde lalahlekelwa yizinsizakalo zikaSurer maphakathi nesizini lapho umshayeli waseSwitzerland elimala kakhulu engozini ye-rally. Ngakho-ke ukubambisana kwe-BMW okuphumelela kakhulu ngo-1986 kwaba neqembu elisha le-Benetton, elaba namaphuzu angu-19, lanqoba i-  <response>: I-Mexican Grand Prix futhi yathatha izindawo ezimbili zokuqala noBerger noTeo Fabi. I-Arrows ne-Benetton baqhubeka nokusebenzisa inguqulo yokuqala eqondile yenjini ye-M1213. 