I ran Super Singles on my last semi tractor. I bought into all the "Savings" hype. Until one cold February morning (-25 actual air temp). Checked the tire pressure in my shop, all was good. Hooked up trailer and headed out. Got <10 miles out of town and BANG!! Long story short.......$5K later for new duals and aluminum wheels AFTER trading in what was left (thank God no serious equipment damage) and I was back to work. Oh and when my tire dealer (Michelin) did a search for a Super Single, not one to be found in a 300 mile radius!! Michelin hypes these tires. The "real" world isn't so convinced.