Tire pressure....again

You're going to get sooooo many opinions on this.....both here and through the various "professionals" that you ask. Best answer is to run the pressure recommended by the TIRE manufacturer according to the weight placed on that tire. Set the cold pressure by the manufacturer's chart and unless there's a problem while underway, don't readjust the pressure until the tire is cold once again. Sounds like the tire professional you consulted is defaulting to tell you to run MAX Cold PSI. It's certainly safe to do so, but I've found that the ride is pretty harsh when you do that.

And yeah, if all the other tires are wearing okay as you have them set, you may just have one bad tire.