My 2015 Chevrolet Silverado came with Goodyear Wrangler SRA 4 ply tires. I had really good luck with the factory set of tires. The next set of Goodyear Wrangler SRA's were poor. Seems like they would get breaks on the inside probably due to rock impacts. They must have changed the recipe for the rubber. So, no more Goodyear SRA's for me. The impact caused tread separation then a little bulge would develop on the outside. I am getting ready to replace the Goodyear tires. Last summer we bought a 26 foot bumper hitch camper. Around 6000 lbs. total towing weight. Bumper weight hitch wouldn't be excessive plus I have a Blue Ox weight transfer/stabilization hitch. My question is should I buy 10 ply load range E tires? Tire dealers generally say the OEM 4 ply tires are good enough. Also, with the 4 ply tires I would get a smoother and quieter ride when I am not pulling the trailer. The primary advantage of the 10 ply tires would be more security on the road. What are you guys doing and/or recommend? Thank you.