I have a 2015 Fox mountain 235RLS with 6 lug axles. I just replaced the original tires with Goodyear Endurance tires, made in the USA. The spare is a Goodyear and never been on the ground. My trailer parks in a barn when not in use and the spare is covered. It's 9 years old but as I said, never used.
Should I replace it too or use it as a spare only?
Should I replace it too or use it as a spare only?