Jkimman, we have a 2509C Classic purchased new from the factory in November 2009. So, your Hi-Lo and our Hi-Lo are only two years apart with same floor plan and approximately the same weight specifications. Our Hi-Lo has a 5-bolt tire pattern and came from the factory with 15-inch C-load tires. About three years after the Hi-Lo purchase, we replaced those tires with D-load Carlisle ST tires, 205/75R15 with a maximum load of 2150 lbs. at 65 psi. It is now two years later and have had great results with these new tires.
Dee
Summerville, SC