I have noticed low tread life with their passenger tires. 15/20k and they are smoked, but compounds could be different on them compared to the m/t's. I regularly work on a customers land cruiser that has the A/T's. They seem to last but he has a life time alignment threw my shop along with a highly maintained vehicle.
As for my personal experience ive only owned the v12 performance tires for my mazdaspeed 3. They rated good on tire rack but for a performance tire they sucked. No grip, extremely hard compound and seemed lacking. It took a 2 minute burn out to even get to 2/32" of tread after 20k of hard track use.