Scott Dixon's well off the pace ahead of tomorrow morning's Indy Car grand prix in Iowa.

The reigning series champion has only managed the 10th best time in qualifying, with his fastest lap more than half a second behind pole-sitter Simon Pagenaud.

Meanwhile, fellow Kiwi Shane van Gisbergen has set the fastest time in qualifying for this evening's second Supercars race on the streets of Townsville.

His team-mate and race one winner Jamie Whincup has posted the second best time, with the top 10 shoot-out to determine who gets pole position.