In 1985, when Ghosn was 30 years old, he was appointed chief operating officer (COO) of Michelin's South American operations. He returned to Rio de Janeiro, reporting directly to François Michelin, who tasked Ghosn with turning around the operation, which was unprofitable and struggling under Brazil's hyperinflation. Ghosn formed cross-functional management teams to determine best practices among the French, Brazilian, and other nationalities working in the South American division. The multicultural experience in Brazil formed the basis of his cross-cultural management style and emphasis on diversity as a core business asset. "You learn from diversity ... but you're comforted by commonality", Ghosn has said. The division returned to profitability in two years.