With my 19.5's I always check the pressure before a trip. I usually run to the place down the street so it is using a commercial type system. Then while traveling I will use my dually type long neck gauge, which I carry in the door. Everytime I fuel the truck I walk around and touch each tire and wheel. On the trailer I can touch the hub as well. Doing that saved me, I assume, a really expensive brake issue as I felt the extra heat being transferred to the wheel by the faulty front brake. I do not see truck drivers thumping tires and have heard that the new manufacturing processes for tires makes that a useless effort, don't know why! Maybe some one has insight? If a dual was a lower pressure it seems to me the temps between the two would be different and lead me to think something was up, as it did when I picked up a shard of steel on the inside dual two years ago...it was so tight into the tire that it took two techs to get it out using big vice grips and a tire bar. I would not go back to LT tires...that shard would have caused a major blow out and some serious damage. My motto is to be aware and observe.
