I'm sending this photo to you for a friend of mine. He owns a 2019 Newmar Essex on a Spartan chassis. The photo below is from the passenger side tag axle tire, 315 80R22.5 XZA. The wear pattern in the photo doesn't go the full circumference but about 180 of the 360 degrees. The tire has 40000 miles on it. The other tag tire doesn't have this wear pattern. He runs 85 psi in the tag tires based on actual coach weight on the tag axle/Michelin tire pressure table. Your assessment and professional opinion would be appreciated. I'm not sure if I created the URL for the photo correctly. Thanks in advance for any help you can provide.