Originally Posted by Ray,IN
My Goodyear 275/70R22.5 tires are 5 years old now and have no weather cracks-anywhere. The MH is always stored inside when unused. Michelin is supposedly the best, and they recommend annual de-mounted inspection annually after 5 years, and replacement at 10 years max. I'll treat my Goodyears the same until they either fail inspection or begin to crack, or reach 10 years.
When replacement time arrives, I'll look at all brands except Michelin since they are the only ones I read failure stories about. All tires sold must meet the same DOT standards anyway.
Your no cracks may be the reason Good Year has a 7 year warranty for cracks on their G670's.
My Goodyear 275/70R22.5 tires are 8 years 4 month old now and no sign of cracks. And they have been outside 24/7. I do put covers on them when staying over a week anyplace.
Going for 10 years. My last set of Michelin's had 2 blow outs by 6 years.
Michelin has 0 days of warranty for sidewall cracks. :(