Kiwi Shane van Gisbergen knows today's ITM Auckland SuperSprint practice is as important for his title hopes as the next two days when championship points are up for grabs.
The 27-year-old Red Bull Racing driver has a 148-point championship lead over teammate Jamie Whincup as the penultimate round begins at Pukekohe Park Raceway today.
Because the South Auckland track is notoriously hard to pass at and coupled with the nature of the weekend's racing format qualifying will take on more importance than normal this weekend.
Friday practice becomes extremely important as teams and drivers try to find the perfect balance to give them an edge in qualifying.
Indifferent weather at Pukekohe on Friday will further complicate matter.