Queensland’s V8 Supercar teams have undergone searching runs in final preparation for the opening leg of the Pirtek Enduro Cup.

On a day of dry but changeable conditions with blazing sunshine interrupted by periods of heavy cloud cover Red Bull Racing Australia, Erebus Motorsport, Tekno Autosports and Dick Johnson Racing completed long workouts.

Red Bull’s mainstay Commodores of Jamie Whincup/Paul Dumbrell and Craig Lowndes/Warren Luff went through trouble-free tests at Queensland Raceway.

Erebus ploughed through a specific plan including ticking off a series of set-up changes.

After analysing the data from the three Mercedes-Benz E63 AMG-badged fighters Erebus from Winton, the team spent time evaluating different suspension settings.

“Winton was not so good for us after having a good Queensland Raceway, Townsville and Hidden Valley before that so we want to be able to go to Sandown and put our best foot forward,” team manager David Stuart said.

“We’ve done the analysis on Winton and we are trialling a few different set-up changes.”

Tekno’s Jono Webb worked through the necessary sheet of pre-long distance race homework ahead of the Sandown 500 from September 13-15 – the opening leg of the Pirtek Enduro Cup.

Webb and team-mate Shane van Gisbergen continued to work solo in their respective Commodores with their respective co-drivers, Marc Lieb and Jeroen Bleekemolen not joining the effort until opening practice at Sandown.

There was a hiccup for the #17 Tim Blanchard/Ash Walsh DJR Falcon which could only complete half the day after experiencing a nasty fire caused by a suspected faulty oil cooler.

The fire was extinguished before it could do too much damage with the Ford parked up for the afternoon session.