 This change seemed to have favored the Bridgestone's wider performance range over the more temperature- and track-specific Michelins.Pressure from top riders and declining viewership led Dorna CEO Carmelo Ezpeleta to propose a single-tire manufacturer for MotoGP.In the end, rules were amended to allow 9 more tires per weekend per rider, and Valentino Rossi switched to Bridgestone for the 2008 season while his FIAT Yamaha teammate Jorge Lorenzo used Michelins.