I just purchased a 1997 Monaco Dynasty 38' with 5 year old (DOT 2800)Goodyear (295/75R22.5 ) G397's on the front and G159's on the back. They look to be in perfect condition, but I'm considering $2500 replacements due to age. I want to be safe, but also don't want to needlessly spend that kind of money.
According to the FAQ on the Goodyear web site at:
http://www.goodyear.com/rv/faqs/care.html#4
------------------------------------------------When should I replace my tires based on age?
There are many variables that could dictate tire removal/replacement relative to age. Some of the obvious would include: mileage, usage per year, and vehicle storage practices.
Many RV owners replace tires when the tire manufacturer's standard workmanship and material warranty expires.
Goodyear's warranty on Unisteel Radial Medium and Light Truck tires expires at 4 years from date of original manufacture or new tire purchase date. The warranty on Goodyear's Premium Radial tires expires at 5 years from date of original manufacture or new tire purchase date.
If you do not generate many miles per year on your RV tires and store the vehicle out of the sun, your tires will last many, many years.
------------------------------------------------
I only wish they would define 'many, many years'.