Kiwi Shane van Gisbergen's championship rival Jamie Whincup lowered the lap record at Pukekohe Park Raceway with the fastest time in the final practice session of the ITM Auckland SuperSprint on Friday.
The Red Bull Racing Holden driver was one of 11 cars to go under the previous lap record van Gisbergen had set earlier in the day - posting a time of 1:02.12s.
Whincup trails teammate van Gisbergen by 148 points in the championship with two rounds remaining and isn't reading anything into his slight advantage on the opening day after a mixed performance that saw him have a high speed spin during the second session, where he did well to keep the car off the concrete wall.
"It was an eventful day for car #88 today," Whincup said. "I tried to write the car off early in practice 2. Somehow, with more ass than class, the thing stepped a bit right which kept me on the black stuff. For the record the black is definitely more grippy than the green, especially after it has been raining.
"We were able to recover. We did a couple of practice sessions with badly flat-spotted tyres. But then when we put a second set of our green rubber on the car was pretty good."