Bill, Gerald is precisely correct in his comment. We have a 98 Patriot 38'. Don't change sizes on the FRONT!
It came from the factory with Goodyear 275/70R-22.5. Next they were replaced with Toyo tires of the same stated size as above.
Both of these were ok but slightly rub the tires shield in front of the air bags.
Next, the Toyo were replaced with Michelin 275/70R-22.5 XZA 2. In 10 months and less than 5,000 miles of driving, the passenger Michelin had completely rubbed through the tire shield and was very close to taking out the first air bag. Fortunately, I caught it in time and mounted thin metal plates on the tire shield in front of the air bag. After another 5000 miles, I had to do the same on the driver side. I will continue to monitor them each year during my detail annual maintenance.
The rubbing point is when the steering is turned to the maximum end point. I still find it hard to imagine so much wear when touch time is rate and usually at low speed like backing or driving into a campground or parking lot but it does.
NOTE THAT ALL THREE BRANDS OF TIRES HAVE THE SAME STATED TIRE SIZE!
LARRY FRITZ