Blake, you might like M&H , they were the 1'st company to make N/TF tires, and have improved their tires since.
MH has 13.00/16 that is 12.2" tread width, 15.4 section width, 101" roll-out, Hayden Wheels is M&H dealer, I'll check on Monday about drop shipping to Aus.
The M/T tires show on their website the 34.0/13.5-16 is 34.5 dia, 109 roll-out, 14" tread width, 39 lbs weight. I can call Monday to confirm the roll-outs, and I know FED that are running their "Bubba" tires.
My Email address is jchansen60@gmail.com, phone 805-444-4489