The proper load range and air pressure are very important. My motorhome came with Michelins and will always have Michelins. Family Motor Coach Association has a discount program for Michelin tire.
https://www.fmca.com/benefits/michelin-advantage.html
Most trailer tires aren't rated for speeds over 65MPH. Slow down and enjoy the ride. I see many RVer's blow past me when I'm doing 65. I know we want to get there just take it easy. 65 MPH is enough.
Jeff