Jimc197: I don't know enough about PW to know how different a 2000 is from my 1997. I run fronts at 55lbs, rears at 80lbs and airbags at 35. I also am running Michelins.....but will take .boB's comment into consideration when I replace...thanks .boB....I just haven't experienced the handling issues described except in very high winds. I went from Phoenix to Glacier last summer and, honestly, didn't think much about the driving. Also have been in Cedar Breaks (steep climb with sheer cliffs), Zion and Bryce.....Madiera Canyon near Tucson. I'm frequently in the AZ White Mountains and up on the rim. But whatever my experience with my particular RV, you should do what it takes to feel comfortable. Hope you successfully resolve your issue.