Prodrive’s Pepsi Max Fords continued to set the pace at Sandown in the final practice session prior to qualifying.
Mark Winterbottom waited until moments after the chequered flag to put down the 40 minute session’s fastest time of 1:08.87s.
The last gasp effort edged team-mate Chaz Mostert by 0.05s as new tyres for all of the front-runners provided a form guide for qualifying.
Jamie Whincup ended up third having become the first into the 1:08s with just over 10 minutes remaining.
The Red Bull driver did not improve in the closing stages, but was still quick enough to end up within 0.1s of the pace-setting Falcon.
Late efforts from Scott Pye and Jack Perkins saw the DJR Team Penske Falcon and Holden Racing Team Commodore complete the top five.
David Reynolds, Shane van Gisbergen, Scott McLaughlin, Lee Holdsworth and Fabian Coulthard filled sixth through 10th.
Primary drivers undertook the bulk of the duties as they worked on set-ups ahead of the 20 minute qualifying session.
As was the case on Friday, windy conditions continued to challenge the drivers, particularly into Turn 1.
Dale Wood brought out the red flags in the early minutes when a lock-up at Turn 1 ended with the #21 Commodore nudging the tyre wall.
The GB Galvanizing entry was in more trouble later on, running through the Turn 9 gravel before rejoining unscathed.
Result: V8 Supercars Wilson Security Sandown 500, Practice 4
|1||Pepsi Max Crew||Mark Winterbottom||Ford Falcon FG/X||1:08.8740|
|2||Pepsi Max Crew||C.Mostert/C.Waters||Ford Falcon FG/X||1:08.9248||00.0508|
|3||Red Bull Racing Australia||Jamie Whincup||Holden Commodore VF||1:08.9681||00.0941|
|4||DJR Team Penske||Scott Pye||Ford Falcon FG/X||1:09.0285||00.1545|
|5||Holden Racing Team||J.Perkins/R.Ingall||Holden Commodore VF||1:09.1830||00.3090|
|6||The Bottle-O Racing Team||David Reynolds||Ford Falcon FG/X||1:09.1884||00.3144|
|7||Team Darrell Lea STIX||S.Van Gisbergen/J.Webb||Holden Commodore VF||1:09.2557||00.3817|
|8||Wilson Security Racing GRM||Scott McLaughlin||Volvo S60||1:09.2738||00.3998|
|9||Walkinshaw Racing||L.Holdsworth/S.Bourdais||Holden Commodore VF||1:09.2936||00.4196|
|10||Freightliner Racing||Fabian Coulthard||Holden Commodore VF||1:09.2992||00.4252|
|11||Holden Racing Team||G.Tander/W.Luff||Holden Commodore VF||1:09.3934||00.5194|
|12||Supercheap Auto Racing||Tim Slade||Holden Commodore VF||1:09.4517||00.5777|
|13||Red Bull Racing Australia||C.Lowndes/S.Richards||Holden Commodore VF||1:09.4741||00.6001|
|14||Nissan Motorsport||J.Moffat/T.Douglas||Nissan Altima||1:09.4793||00.6053|
|15||Wilson Security Racing GRM||D.Wall/C.Pither||Volvo S60||1:09.5163||00.6423|
|16||Team BOC||Jason Bright||Holden Commodore VF||1:09.5935||00.7195|
|17||Erebus Motorsport V8||W.Davison/A.Davison||Mercedes E63 AMG||1:09.5944||00.7204|
|18||Nissan Motorsport||R.Kelly/D.Russell||Nissan Altima||1:09.6589||00.7849|
|19||Super Black Racing||Andre Heimgartner||Ford Falcon FG/X||1:09.6856||00.8116|
|20||Nissan Motorsport||T.Kelly/A.Buncombe||Nissan Altima||1:09.7233||00.8493|
|21||Erebus Motorsport V8||A.Walsh/J.Le Brocq||Mercedes E63 AMG||1:09.8098||00.9358|
|22||Team Cooldrive||Tim Blanchard||Holden Commodore VF||1:09.8439||00.9699|
|23||GB Galvanizing Racing||Dale Wood||Holden Commodore VF||1:09.9765||01.1025|
|24||Nissan Motorsport||M.Caruso/D.Fiore||Nissan Altima||1:09.9820||01.1080|
|25||Repair Management Aust Racing||N.Percat/O.Gavin||Holden Commodore VF||1:10.0847||01.2107|