
The matter has been raised in both the Supercars and Super2 paddocks since track action kicked off yesterday, with some teams adamant the pre-marked hard compound tyres are quicker than the event-marked batch.
It's thought that Zak Best used a set of pre-marked tyres to take pole position for Super2 earlier today, while it is understood a significant amount of running was completed on the yellow-walled tyres, including Garth Tander's 2m04.135s, the fastest time of the weekend so far.