SeattleLion makes some good points. I became concerned about TowMax tires because of many posts on this site. After much research, reading Rober Marble's blog
http://www.rvtiresafety.net/ and several communications with Roger, many of my concerns have eased. Roger's advice to me...install a TPMS, check you tires regularly for out of round/bulges, know the weight of your rig and don't exceed the Dual Load rating of your tires (lower pressure) and shoot for a 10% margin. Also, form me, remember these tires are maxed out at 65 mph. Will this alleviate all potential problem. Probably not. There are always potholes and other road hazards. But following Roger's advice I feel I at least have a fighting chance.