Don’t go wider than 235/85R16...you want low pressure lengthening of tyre track, not widening. Toyo M55’s or AT’s, Bridgestone D661 or any good AT. I’ve just fitted Kumho AT51’s for a change because I got a good price, wanted an all round tyre. But if I was buying new tyres for Simpson or any big outback trip, I’d have trouble going past Bridgestone D661 - vey strong sidewalls, but compliant tyre. Or maybe I’d try M55’s. You dont need MT’s IMO.
Have a great trip!

