I agree with the above, wider offers little benifit in sand but increases strain on suspension and steering. In sand a tall tyre aired down is much better
fat tyres reduce Traction in mud because the tyre tends to skate over the surface rather than biting in.
7.50x16s and their equivalent are available anywhere in the world you find toyotas or landrovers, i.e. anywhere!! you may need to buy one locally if you damage one of yours, which is very possible.
fat tyres are for posers!!
1990 Landcruiser H60. Full rebuild completed 2014
2012 Hilux, mountain top and bedrug with GG AT2s