My Michelin manual that came with my coach when it was new said to run 85 lbs. in the rear and 90 lbs. in the steer tires. My tires are Michelin XRV's 235/80/22.5 and those pressures did not work for me because, I was experiencing slight tire squirm on the drive axle! So I experimented with tire pressures on different long trips and I found that running 100 lbs. all around works for me the best. I'm in my first year running my second set of XRV's and, I drove 10 years with no tire problems on my first set of XRV's at 100 lbs. Happy Trails, Rooster
