Running the fronts on most 25' or less Class C's at 80 psi per the door stickers {which are a bad joke}, will reduce the contact patch to the point that it will handle like a pig on skates and be blown all over the road by passing trucks and/or cross winds. Putting 80 in the rears would be serious overkill las at 80 they are rated for 2,640# of load X 4 = 10,560# to carry a 7,700# load. This also creates a very stiff ride that will beat you to death and shorten tire life.
:C
Most Michelin tires for a 25' or less Class C would have a load rating of 2,470# in a dual wheel configuration. Please provide the tire size.
