Thanks! It's a fun truck. Nice spending most of my time on adventures rather than fixing things.
I'm happy with them so far. My initial impressions... They are quieter than MTs on road. Smooth. Excellent lateral traction, especially noticeable on gravel roads at higher speed. Mud traction is adequate; it slipped more than the Firestone Destination MTs did on hill climbs. The closer tread spacing makes gripping wet, muddy rocks more challenging. Heavy duty sidewall; took the pressure down to 16psi and they had limited sidewall deflection (will need to play with pressure). Fuel mileage is down; may be related to winter fuel blend (need more time to know). Tread block spacing is very similar to the Duratrac. They have great sipping. Very good in the rain. I'm anxious to test in the snow and ice.
My primary consideration with going with the hybrid tread design was to improve road driving: noise, wet traction, snow traction. MTs will beat these tires in the mud and wet rocks. The majority of my driving is road, gravel and trails. This truck isn't a rock crawler. Hopefully, they will be a good match for me assuming they will perform well enough in the slippery NW mud.
255/85 ST MAxx will be available next month according to Cooper Rep.
Are you living in Seattle? We should get a trip together.