Wallowing Beast
My new to me RV runs and drives well, but definitely feels wallowy, overloaded and top-heavy. It's somewhat unnerving to drive, though once on the open road it seems fine. I have never driven one of t...
Forum Discussion
I don't use 80 lbs. pressure in the rear duals of our Class C because it's mentioned on their sidewalls as maximum pressure.
I use 80 lbs. of pressure because ... in an effort to accomplish other goals ... that's the highest pressure that can be used without stressing the Load Range E tires beyond their published engineered limit. Those other goals are:
- Make the sidewalls as rigid as possible to minimize wallowing in the rear of the Class C.
- Make the sidewalls as rigid as possible to help minimize heat buildup from flexing of the sidewalls so as to maximize tire material life.
- Ensure that the inward-facing sidewalls of the rear duals never bump against each other during normal up and down bouncing when traveling.
- Ensure maximum spacing at all times between the inward-facing sidewalls of the rear duals for least restrictive air flow to help minimize heat buildup in sidewalls so as to maximize tire material life.
In many years of using 80 lbs. pressure in the rear duals, I've never noticed any wear in the center of the tread over wear along the borders of the tread. I have noticed this in lighter weight vehicles I've owned, but never on the Class C's M&S Michelin tires.
FWIW, I use 65 lbs. of pressure in the front tires and can roll along the highway steering by comfortably using only one hand on the wheel (when safe to do so).
I use 80 lbs. of pressure because ... in an effort to accomplish other goals ... that's the highest pressure that can be used without stressing the Load Range E tires beyond their published engineered limit. Those other goals are:
- Make the sidewalls as rigid as possible to minimize wallowing in the rear of the Class C.
- Make the sidewalls as rigid as possible to help minimize heat buildup from flexing of the sidewalls so as to maximize tire material life.
- Ensure that the inward-facing sidewalls of the rear duals never bump against each other during normal up and down bouncing when traveling.
- Ensure maximum spacing at all times between the inward-facing sidewalls of the rear duals for least restrictive air flow to help minimize heat buildup in sidewalls so as to maximize tire material life.
In many years of using 80 lbs. pressure in the rear duals, I've never noticed any wear in the center of the tread over wear along the borders of the tread. I have noticed this in lighter weight vehicles I've owned, but never on the Class C's M&S Michelin tires.
FWIW, I use 65 lbs. of pressure in the front tires and can roll along the highway steering by comfortably using only one hand on the wheel (when safe to do so).
