Best mates Will Davison and Jamie Whincup are set for an epic battle to the end of the V8 Supercar Championship Series after a cracking day at the Nikon SuperGP on the Gold Coast threw the game wide open.

Toll Holden Racing Team's Davison benefitted from a first race incident between TeamVodafone's Whincup and Fujitsu Racing's Jason Bright which ultimately pulled the leading pair back to within 41 points of each other.

For the record Davison's team-mate Garth Tander won the day in a points tie with Ford Performance Racing's Mark Winterbottom where first across the line in the last race of the day is the victor. Davison was third despite suffering from a virus with Whincup 13th for the day.

"It's been another great day and one I didn't just want to throw away," Davison said. "Anything can happen as we saw with Jamie this morning and that could happen again tomorrow."

Whincup was retrospective about the incident with Bright that was deemed not to be outside of the rules by the officials.

A day after Bright copped a huge spray from Russell Ingall he was at the centre of another storm when he clipped Whincup in a three-way tussle for a chicane at the restart of the second safety period, throwing Whincup's race into chaos.

Whincup suffered a flat tyre as a result and had to circle almost the entire track with no rear rubber and huge damage to the car. It put the Championship leader a lap down and in a massively bad situation on day one.

"What do you do? We fought hard in qualifying, the car was quick, car's been quick all day, (just) caught up in an incident, there's nothing you can do about it," he told AAP afterwards.

"I just put it down to motorsport and that's just the way it goes. Without doubt it's going to be a full-on battle. Adelaide I said it. I said it at Hamilton where everyone just thought I was going to nick off but that's definitely not going to happen.

"You have peaks and low patches, and whoever wins is going to be best overall."

Tander was in control most of the day to day, as was Winterbottom in the Ford Performance Racing Falcon.

"I'm still a far way off so we're just going to go and try to win as many races as I can and see what happens," Tander said.

"I can't control what happens with Will and Jamie and Craig. For me it's just a matter of going and doing my own thing and stay out of trouble, score a heap of points and where we finish is where we finish."

The Nikon SuperGP continues tomorrow with a 20 minute qualifying dash to decide the first of the grids for another grueling day of two 150km races.