Cameron McConville took the other round win, in a single appearance at Winton, while Taz Douglas, Jack Perkins and Paul Morris each took race victories.
James Courtney won his first championship, finishing every race en route to a 65-point title-winning margin over two-time defending champion Jamie Whincup.
[1] Courtney took five race wins to Whincup's nine, but retirements for the latter at Ipswich and Homebush denied him the opportunity of matching Mark Skaife as a three-time successive champion.
Lowndes won the endurance rounds at Phillip Island and Bathurst with Skaife, as well as a solo win at Symmons Plains.
Holden Racing Team's Garth Tander rounded out the top five in the drivers' championship, recovering from a poor beginning to the season, taking a double victory in Adelaide, a win (with Cameron McConville) in Surfers Paradise, as well as a victory in the non-championship BRC IMPCO V8 Supercars GP Challenge for V8 Supercar Championship Series competitors.