Rubuta ci gaba don wannan sakin layi - Castroneves ya fara kakar 2008 ta hanyar gamawa ba kasa da na hudu ba a zagaye na farko da zagaye na biyu a jere a St. Petersburg da Motegi don samun jagorancin maki na farko. Ya cancanci na huɗu don Indianapolis 500
Castroneves ya rasa jagorancin maki ga Dixon lokacin da lalacewar fuka-fuki ta gaba ta sauke shi zuwa na huɗu. Ya gama na biyu a duka Texas da Richmond tare da matsayi na biyu a Nashville da Mid-Ohio, dukansu biyu ba su haifar da nasara ba. Castroneves ya lashe gasar Peak Antifreeze Indy Grand Prix a Infineon Raceway yana jagorantar tsere mai tsere 51 daga matsayi na farko don kawo karshen tseren tsere 29 ba tare da nasara ba. Bayan ya gama na biyu a Detroit don hana Justin Wilson ba bisa ka'ida ba, ya shiga kakar wasan karshe na Peak Antifreeze Indy 300 maki 30 a bayan jagorancin gasar Dixon. Castroneves yana buƙatar lashe tseren kuma Dixon ya gama 11th ko ƙasa don zama zakara. Ya fara ne a 28th saboda hukuncin iyakar hanya, ya doke Dixon da 0.0033 seconds a karo na biyu mafi kusa a cikin tarihin jerin, ya ƙare kakar na biyu a maki tare da 629.