Start looking because they are out there. I bought a 2006 Winnebago Sightseer 26P last year for 20k that had new Michelin tires on it and needed nothing. We used it for a year and traded it in on our DP. It had 2 slides.
I lost one on a gooseneck horse trailer one time, didnt know it until i stopped and seen it was gone. I also drive 75. To post anything on here other than pulling a pup tent with a dually at 55mph is going to get you bashed upon. Glad you had a good trip that only cost you some money when you got home.
We had a 2015 Yukon Denali with the 6.2 and it was getting a solid 18mpg everyday and as high as 20. Was fun to stick yer foot in it also. It had some quirks that we didnt care for and went back to a Mercedes suv.
I plan to weigh it soon as they told me 110lbs in the tires and the manual says 100. Wife spent all day cleaning and loading it. Lots of xtra cabinet space left and no plans to put anything in em. We have all we need in there. Does Michelin have a site to look for pressures needed for actual weight ?