The trio will drive one of two R8s run under the new Audi Sport Team Valvoline banner, with Christopher Mies, Christopher Haase and Markus Winkelhock sharing the other.
Prepared by Audi Sport Customer Racing Australia, the two Melbourne-based cars have been nominated as Audi’s Intercontinental GT Challenge points-scorers.
The team's preparation for the 12 Hour included a run for Tander and Mies at Challenge Bathurst in November, where the German recorded a 1:59s lap while running without Balance of Performance limitations.
"We are really pleased with our plans for the Bathurst 12 Hour and the driving squad assembled," said Audi Sport Team Valvoline's Steve McLaughlan.
"We have a long and very successful relationship with Audi Sport and that will only grow for 2019 as Audi Sport Team Valvoline.
"We have had a great build-up for Bathurst with the success in Australian GT in 2018 and our pre-Bathurst test at Mount Panorama in November.
“We continue to grow our relationship with Audi Sport and the change of branding for the new year is a reflection of that ongoing relationship and also the continued support from Valvoline, who have been great supporters for a long time now.
“They will support our program throughout 2019 as we look forward to a successful Bathurst campaign and a chance to win the Australian GT Championship again.
"There's no doubting the abilities of the drivers assembled for Bathurst and we're looking forward to representing Audi and Valvoline there - and moving into a new Australian GT season in 2019."
Audi's victory - their third - in the 2018 Liqui-Moly Bathurst 12 Hour made them the most successful marque of the 'GT era' in 12 Hour history.
No brand has won more than three 12 Hour races since the first event in 1991.
Five Audi R8 LMS entries have netered the 2019 race as the brand looks to claim a fourth title.
The pair of Audi Sport Team Valvoline cars will be joined by the Hallmarc Racing R8 to be driven by Marc Cini, Lee Holdsworth and Dean Fiore.
Audi Sport Customer Racing Australia will also enter a fourth car, with drivers to be confirmed.
Aussie Driver Search and Matt Stone Racing will enter the race for the first time, recently confirming Supercars driver Todd Hazelwood will lead their driving attack.