"We have spent exactly zero time talking about what that is, because the current focus is being a driver at GRM," he explained.
"When that changes, I guess those discussions will probably change as well.
"When I joined the team in 2017, it was primarily coming as a driver and that's what they wanted me there for.
"But they also said 'we see some potential in the future for something off-track when you finish driving'.
"That was, for me as a driver with retirement in my more immediate future, when you have a deal like that offered to you, it's quite reassuring knowing full well that when you finish driving you have options.
"What those options might look like, we've spent no time talking about it because the focus has always been driving."
Tander will again partner James Golding in 2019, when GRM loses its title backer Wilson Security after four seasons.