I had my 2011 Allegro Open Road RED (purchased "previously enjoyed" a year ago) four corner weighed at the Freightliner Service Center in Gaffney, SC recently.  Both the front and rear axle weights were very close to the manufacturer's maximum axle weight ratings. Based on these weights, the Freightliner techs said the indicated tire pressures for my Michelin XZA3 tires was 90 PSI, and set all six tires there. The manufacture's weight label (the label next to the driver's seat in the c