We buy tires checking the DOT info and the load range and type of travel... some are local delivery truck tires and some are for long haul. And of course they need to be properly inflated. Our PC bought last summer (we ordered it not just off the floor) has Michelin's. And I can tell you the different tire brands do handle differently. My prior 50,000 miles was in a 41 ft Allegro Bus and we bought tires..And specified age check up (there is a date stamp on the tire) before I bought and did not put aging tires on in the first place. With the weight we carry first class tires matter. And the price for tires the PC size is not that much compared to the last buy on the Bus. Be safe is the important thing.