The Red Bull Racing Australia Holdens bookended the field in opening practice for the Tyrepower Tasmania 400 at Symmons Plains.
Craig Lowndes set the pace in the first of three 20 minute sessions, clocking consecutive fastest times on his final two laps.
His best of 51.64s left previous fast-man Jason Bright second quickest, 0.19s adrift.
Tim Slade, Fabian Coulthard, Mark Winterbottom, Garth Tander and Chaz Mostert completed a Holden-Ford lock-out of the top seven places.
Michael Caruso was the fastest of the Nissans in eighth, with Will Davison leading the Erebus Mercedes effort in 18th and Scott McLaughlin a low-key 21st in the top Volvo.
Team-mate and circuit rookie Robert Dahlgren improved steadily throughout the session, ending up just 1.4s from the pace in 24th.
A power steering pump problem cut Jamie Whincup's session short after just three laps, leaving him 25th in the final order.
A damp track from morning rain proved little hindrance to quick times for the front-runners, with Garth Tander the first to get within a second of the practice lap record at the halfway mark.
A further two 20 minute sessions will complete today's reduced practice schedule.
See below for the full Practice 1 result
1 | Red Bull Racing Australia | Craig Lowndes | Holden Commodore VF | 00:51.64 | |
2 | Team BOC | Jason Bright | Holden Commodore VF | 00:51.83 | 00:00.19 |
3 | Supercheap Auto Racing | Tim Slade | Holden Commodore VF | 00:51.88 | 00:00.24 |
4 | Lockwood Racing | Fabian Coulthard | Holden Commodore VF | 00:51.90 | 00:00.26 |
5 | Ford Pepsi Max Crew | Mark Winterbottom | Ford Falcon FG | 00:51.90 | 00:00.26 |
6 | Holden Racing Team | Garth Tander | Holden Commodore VF | 00:51.92 | 00:00.28 |
7 | Ford Pepsi Max Crew | Chaz Mostert | Ford Falcon FG | 00:51.93 | 00:00.29 |
8 | Norton Hornets | Michael Caruso | Nissan Altima | 00:51.97 | 00:00.33 |
9 | Heavy Haulage Australia | Nick Percat | Holden Commodore VF | 00:51.99 | 00:00.35 |
10 | Team Tekno VIP Petfoods | Shane Van Gisbergen | Holden Commodore VF | 00:51.99 | 00:00.35 |
11 | Wilson Security Racing | Scott Pye | Ford Falcon FG | 00:52.00 | 00:00.36 |
12 | The Bottle-O Racing Team | David Reynolds | Ford Falcon FG | 00:52.03 | 00:00.39 |
13 | Erebus Motorsport V8 | Will Davison | Mercedes E63 AMG | 00:52.05 | 00:00.41 |
14 | Repair Management Aust Racing | Russell Ingall | Holden Commodore VF | 00:52.11 | 00:00.47 |
15 | Holden Racing Team | James Courtney | Holden Commodore VF | 00:52.12 | 00:00.48 |
16 | Norton Hornets | James Moffat | Nissan Altima | 00:52.14 | 00:00.50 |
17 | Jack Daniel's Racing | Todd Kelly | Nissan Altima | 00:52.14 | 00:00.50 |
18 | Erebus Motorsport V8 | Lee Holdsworth | Mercedes E63 AMG | 00:52.17 | 00:00.53 |
19 | Wilson Security Racing | David Wall | Ford Falcon FG | 00:52.22 | 00:00.58 |
20 | Team JELD-WEN | Jack Perkins | Ford Falcon FG | 00:52.23 | 00:00.59 |
21 | Valvoline Racing GRM | Scott McLaughlin | Volvo S60 | 00:52.35 | 00:00.71 |
22 | Jack Daniel's Racing | Rick Kelly | Nissan Altima | 00:52.40 | 00:00.76 |
23 | Team Advam/GB | Dale Wood | Holden Commodore VF | 00:52.69 | 00:01.05 |
24 | Valvoline Racing GRM | Robert Dahlgren | Volvo S60 | 00:52.99 | 00:01.35 |
25 | Red Bull Racing Australia | Jamie Whincup | Holden Commodore VF | 00:55.86 | 00:04.22 |