Going through town I thought before I headed out on the road again in my RV that I should just make sure the air pressure was OK. The guys working there are not the sharpest tool in the shed. I thought they might be off a few pounds but he was adding more and so I asked what he was doing and he was trying to put 65 pounds into a 50 pound max tires. He said he must have read something on the tire that looked like it meant the pressure. I'm soooo glad I asked as in the heat in a remote place to have my tires blow out.
Then I asked this other guy how to get to a particular highway and he started asking where I was going, commenting on my RV, why I used a map if I had a GPS and literally 10 minutes later gave me a roundabout answer to how to get there without going back into the downtown area.
Run, run as fast as you can away from this place. They might sell you something wrong or more than you need. Trust your car with someone else that actually knows about cars, especially if you are a woman. Safe to say any other place would know more about tires than Discount Tires in Mesa.