New 19.5 Vision wheels and tires

Already completed a 2300 mile trip with previous set up with Nitto 285 Durras and 17 " forged aluminum wheels and this size camper with no problems at all. Sometimes forgot it was on there with my truck. Only problem was I could not find out the wheel rating on the 17" wheels. Hence the 19.5 upgrade. Hauled a heavy 11' shadow cruiser for 2 years with only 17" wheels and Nitto terra 285/70/17 tires. NO SWEAT!! LOL and not much difference with you hauling a Lance 1071!!!!!