Jonathon Webb has ended a wet day of running at Barbagallo with the fastest time in Practice 4.
The Tekno Autosports driver moved to the top of the order with just over 10 minutes remaining, before being displaced by a late effort from Greg Murphy.
Webb's final flying lap of 1:03.91s was enough to move 0.27s clear of the Kiwi however, while Dean Fiore, Will Davison, James Moffat, Jamie Whincup, Fabian Coulthard, David Reynolds, Shane van Gisbergen and Steve Owen rounded out the top 10.
The final order was heavily influenced by tyre condition, with Webb among those to use a new set of wets in the closing stages.
The session was another to be punctuated by red flags, which were again caused by cars becoming stranded at Turn 7.
Lee Holdsworth triggered the first stoppage at the 12 minute mark, while a similar mistake from Jason Bright late in the session set up a four minute shootout before the chequered flag.
Davison's fourth place came despite the Trading Post Ford sitting at the bottom of the time sheets inside the final 10 minutes. The points leader had lost track time with an off of his own at Turn 7 early in the session.
The conditions dictated that the Practice 4 pace would be slower than that seen in both Practice 2 and Practice 3.
David Reynolds' Practice 2 topping time of 1:03.58s proved the fastest of the day, while Todd Kelly's Practice 3 best of 1:03.83s was the quickest of the two full-field sessions.
See below for the full Practice 4 result
1 | Tekno Autosports | Jonathon Webb | Holden Commodore VE2 | 1:03.9072 | |
2 | Pepsi Max Crew | Greg Murphy | Holden Commodore VE2 | 1:04.1729 | 0:00.2657 |
3 | Jim Beam Racing | Dean Fiore | Ford Falcon FG | 1:04.5393 | 0:00.6321 |
4 | Trading Post FPR Ford | Will Davison | Ford Falcon FG | 1:04.5960 | 0:00.6888 |
5 | Team Norton DJR | James Moffat | Ford Falcon FG | 1:04.7255 | 0:00.8183 |
6 | TeamVodafone | Jamie Whincup | Holden Commodore VE2 | 1:04.7711 | 0:00.8639 |
7 | Lockwood Racing | Fabian Coulthard | Holden Commodore VE2 | 1:04.7904 | 0:00.8832 |
8 | The Bottle-O Racing Team | David Reynolds | Ford Falcon FG | 1:04.8187 | 0:00.9115 |
9 | SP Tools Racing | Shane Van Gisbergen | Ford Falcon FG | 1:04.8945 | 0:00.9873 |
10 | VIP Petfoods | Steve Owen | Ford Falcon FG | 1:04.9009 | 0:00.9937 |
11 | Fujitsu Racing GRM | Alexandre Premat | Holden Commodore VE2 | 1:04.9443 | 0:01.0371 |
12 | Tekno Autosports | Michael Patrizi | Holden Commodore VE2 | 1:04.9627 | 0:01.0555 |
13 | Jack Daniel's Racing | Todd Kelly | Holden Commodore VE2 | 1:04.9691 | 0:01.0619 |
14 | Holden Racing Team | Garth Tander | Holden Commodore VE2 | 1:05.0256 | 0:01.1184 |
15 | Fair Dinkum Sheds Racing | Karl Reindler | Holden Commodore VE2 | 1:05.2272 | 0:01.3200 |
16 | Team BOC | Jason Bright | Holden Commodore VE2 | 1:05.2596 | 0:01.3524 |
17 | Jack Daniel's Racing | Rick Kelly | Holden Commodore VE2 | 1:05.2729 | 0:01.3657 |
18 | TeamVodafone | Craig Lowndes | Holden Commodore VE2 | 1:05.2804 | 0:01.3732 |
19 | Tony D'Alberto Racing | Tony D'Alberto | Ford Falcon FG | 1:05.2940 | 0:01.3868 |
20 | Fujitsu Racing GRM | Michael Caruso | Holden Commodore VE2 | 1:05.3065 | 0:01.3993 |
21 | Supercheap Auto Racing | Russell Ingall | Holden Commodore VE2 | 1:05.3557 | 0:01.4485 |
22 | Team iSelect | Taz Douglas | Holden Commodore VE2 | 1:05.5180 | 0:01.6108 |
23 | Lucky 7 Racing | Tim Slade | Ford Falcon FG | 1:05.5630 | 0:01.6558 |
24 | Wilson Security Racing | David Wall | Holden Commodore VE2 | 1:05.5866 | 0:01.6794 |
25 | Holden Racing Team | James Courtney | Holden Commodore VE2 | 1:05.7933 | 0:01.8861 |
26 | Orrcon Steel FPR Ford | Mark Winterbottom | Ford Falcon FG | 1:05.7994 | 0:01.8922 |
27 | Jim Beam Racing | Steven Johnson | Ford Falcon FG | 1:05.8414 | 0:01.9342 |
28 | Irwin Racing | Lee Holdsworth | Ford Falcon FG | 1:06.0825 | 0:02.1753 |
See below for the combined Practice 3 and Practice 4 times
1 | Jack Daniel's Racing | Todd Kelly | Holden Commodore VE2 | 1:03.8251 | |
2 | Tekno Autosports | Jonathon Webb | Holden Commodore VE2 | 1:03.9072 | 0:00.0821 |
3 | Supercheap Auto Racing | Russell Ingall | Holden Commodore VE2 | 1:03.9217 | 0:00.0966 |
4 | The Bottle-O Racing Team | David Reynolds | Ford Falcon FG | 1:04.0092 | 0:00.1841 |
5 | Pepsi Max Crew | Greg Murphy | Holden Commodore VE2 | 1:04.1169 | 0:00.2918 |
6 | Holden Racing Team | James Courtney | Holden Commodore VE2 | 1:04.1622 | 0:00.3371 |
7 | Holden Racing Team | Garth Tander | Holden Commodore VE2 | 1:04.2065 | 0:00.3814 |
8 | Team BOC | Jason Bright | Holden Commodore VE2 | 1:04.2093 | 0:00.3842 |
9 | SP Tools Racing | Shane Van Gisbergen | Ford Falcon FG | 1:04.2398 | 0:00.4147 |
10 | TeamVodafone | Craig Lowndes | Holden Commodore VE2 | 1:04.3566 | 0:00.5315 |
11 | Jim Beam Racing | Dean Fiore | Ford Falcon FG | 1:04.5376 | 0:00.7125 |
12 | Fujitsu Racing GRM | Alexandre Premat | Holden Commodore VE2 | 1:04.5831 | 0:00.7580 |
13 | Trading Post FPR Ford | Will Davison | Ford Falcon FG | 1:04.5960 | 0:00.7709 |
14 | Orrcon Steel FPR Ford | Mark Winterbottom | Ford Falcon FG | 1:04.6861 | 0:00.8610 |
15 | Team iSelect | Taz Douglas | Holden Commodore VE2 | 1:04.6956 | 0:00.8705 |
16 | Team Norton DJR | James Moffat | Ford Falcon FG | 1:04.7255 | 0:00.9004 |
17 | TeamVodafone | Jamie Whincup | Holden Commodore VE2 | 1:04.7711 | 0:00.9460 |
18 | Lockwood Racing | Fabian Coulthard | Holden Commodore VE2 | 1:04.7904 | 0:00.9653 |
19 | Jack Daniel's Racing | Rick Kelly | Holden Commodore VE2 | 1:04.7930 | 0:00.9679 |
20 | Jim Beam Racing | Steven Johnson | Ford Falcon FG | 1:04.8675 | 0:01.0424 |
21 | VIP Petfoods | Steve Owen | Ford Falcon FG | 1:04.9009 | 0:01.0758 |
22 | Fujitsu Racing GRM | Michael Caruso | Holden Commodore VE2 | 1:04.9034 | 0:01.0783 |
23 | Tekno Autosports | Michael Patrizi | Holden Commodore VE2 | 1:04.9627 | 0:01.1376 |
24 | Irwin Racing | Lee Holdsworth | Ford Falcon FG | 1:04.9970 | 0:01.1719 |
25 | Fair Dinkum Sheds Racing | Karl Reindler | Holden Commodore VE2 | 1:05.2272 | 0:01.4021 |
26 | Tony D'Alberto Racing | Tony D'Alberto | Ford Falcon FG | 1:05.2940 | 0:01.4689 |
27 | Lucky 7 Racing | Tim Slade | Ford Falcon FG | 1:05.5013 | 0:01.6762 |
28 | Wilson Security Racing | David Wall | Holden Commodore VE2 | 1:05.5866 | 0:01.7615 |
See below for Speedcafe.com's Trading Post Perth Challenge Race Guide