We have just done the same treks. The 3 treks you mentioned are all a bit different. You may need to adjust your tyre pressure to suit. Several times we re-adjusted to suit the conditions ie the corrugations, stones, rocks, bulldust etc.
In general, we ran our ATV for two at 30psi. Our 200 series Landcruiser at 28psi front and 32 psi at back. We had no tyre problems, all good.
Just be flexible and be prepared to adjust your tyre pressures to suit your rig. What suited us, may not suit you..
All the best, and enjoy the journey; we certantly did.