It varies from person to person, of course, but there are a few key markers you can hit to best support your back.
Given how much time we spend in our cars, getting your driving position right is important. It's also something of an inexact science, given each manufacturer sets up their cabins differently.
Although it's a branded piece of YouTube content, this video from Jaguar takes an interesting walk through the key elements of a good driving position – even if the animated driver is wearing what appear to be fairly high heels.
Check out the video below.