I'm considering buying an Allroad, which I'd like to at some point take
through remote outback Australia across some long rough unsealed roads.

My question is: should I be concerned about the durability of the
low-profile tyres, and if so, is it possible to fit it with more practical
alternatives?

And also, has anyone had any experience in replacing the space-saver with
something more appropriate in a 4WD?

Thanks,

Gordon