Light rain started to fall right as the hour-long session kicked off, Jamie Whincup leading the early running thanks to a 2m27.266s on his first run.
That was still the benchmark when the session was red flagged for the first time after just 10 minutes when Kurt Kostecki buried his Tickford Mustang in the wall at Griffins Bend.
There was more drama at Griffins just moments after the session went green again when Whincup understeered into the wall.
Unlike Kostecki, Whincup was able to continue – however his Triple Eight Holden was left with front-left damage and didn't get back out after returning to the garage.
At the 25-minute mark Porsche factory ace Matt Campbell took over top spot in his Grove Ford thanks to a 2m27.168s.
Moments later the session was red flagged for a second time thanks to Aaron Seton clobbering the wall at The Esses in the #34 Matt Stone Racing Holden.
When the session resumed the times dipped into the sixes, firstly thanks to Triple Eight's wildcard rookie, who went fastest with a 2m26.391s.
That time was then trumped by Fabian Coulthard's 2m26.290s, before Wood took over top spot with a 2m26.222s in the #8 Brad Jones Racing Holden.
That proved to be the end of the session, race control declaring it while the car was being retrieved.
Coulthard ended up second ahead of Jordan Boys, who was an impressive third in the BJR Holden that was repaired overnight following Macauley Jones' run-in with Shane van Gisbergen in qualifying yesterday.
Dylan O'Keeffe was eighth for PremiAir Racing, Zane Goddard ninth for Tickford and Whincup 10th thanks to that early time before his crash.
The sixth and final practice session of the weekend will take place at 1pm local time.
|Holden Commodore ZB||18||2'26.2221|
|Holden Commodore ZB||16||2'26.2871||0.0650|
|Holden Commodore ZB||17||2'26.2932||0.0711|
|Holden Commodore ZB||19||2'26.3384||0.1163|
|Ford Mustang GT||13||2'26.5158||0.2937|
|Holden Commodore ZB||17||2'26.7362||0.5141|
|Ford Mustang GT||19||2'26.9894||0.7673|
|Holden Commodore ZB||19||2'27.1381||0.9160|
|Ford Mustang GT||18||2'27.1640||0.9419|
|Holden Commodore ZB||5||2'27.2668||1.0447|
|Holden Commodore ZB||9||2'27.4674||1.2453|
|Ford Mustang GT||18||2'27.4723||1.2502|
|Holden Commodore ZB||19||2'27.5829||1.3608|
|Holden Commodore ZB||17||2'27.6057||1.3836|
Shane van Gisbergen
|Holden Commodore ZB||16||2'27.6544||1.4323|
|Ford Mustang GT||15||2'27.7572||1.5351|
|Ford Mustang GT||17||2'27.8823||1.6602|
Anton De Pasquale
|Ford Mustang GT||15||2'27.9264||1.7043|
|Holden Commodore ZB||13||2'27.9285||1.7064|
Jack Le Brocq
|Holden Commodore ZB||8||2'28.2869||2.0648|
|Holden Commodore ZB||15||2'28.3379||2.1158|
|Holden Commodore ZB||17||2'28.6251||2.4030|
|Holden Commodore ZB||18||2'28.7183||2.4962|
|Holden Commodore ZB||17||2'28.8027||2.5806|
|Holden Commodore ZB||17||2'29.0278||2.8057|
|Holden Commodore ZB||16||2'29.1196||2.8975|
|Ford Mustang GT||15||2'29.1658||2.9437|
|Ford Mustang GT||7||2'32.2925||6.0704|
|View full results|