Handling issues 2005 Fleetwood Expedition 34H

I bought my 07 Itasca Meridian with 380000 miles on it last year. I have the same cat c7 on a freightliner frame with michelin tires. When I first got the coach I took it to a trusted chassis shop to go over everything related to the chassis. While greasing the front steering zerks they noticed the front wheel bearings were not good. Point is make sure all of your frame components are in good working order before working on the tires. My coach runs straight and true with 95-100 psi in front and 100 psi rear.