I knew something wasn’t right with my truck tires about half way up the turnpike, but I couldn’t see anything wrong. Well, I figured out this afternoon that there’s a “bulge” in the left rear tire tread. The other three have quite a few miles on them, so I decided to just buy a whole set instead of just one. I’m heading to Enid tomorrow. On a positive note, 4J Tire is significantly cheaper the tire store I buy from in TX.