I tried on some Maxxis Bighorns yesterday. These are 255/85R16, true size of 33.3", on +46mm Pajero 16X7J alloys. They barely touch under serious compression and with the wheel turned about 30%. Pretty amazing that these tyres fit and my suspension is still 100% standard and no bodylift. These have a slightly larger diameter than the 285/75R16 tyres I tried on a while back and this is probably the absolute limit in diameter for a Triton without a bodylift.
Excuse the poor quality of the cellphone pic.