Hi Kero
we were up there May / June, three camp trailers and a tinny went up, we went up on the OTT and had no probs, its a bit slow but a breath takeing track soooo much to see, we hopped on the main road on the way back and it was a shocker, i was running 37s and the other guys are running 35s including there trailers and that makes a huge + for the drive, once your on dirt road let your tires down to say about 22psi, carry a spare set of springs and bearings for your trailer

enjoy your trip

Daz