Goodyear G614 tire longevity experience?

[RVcrazy]

We have 18,000 miles on our fiver tires since purchase. Unfortunately, we were given new 2 year old tires without knowing it in July 2014. The tire date is week 39 2012. We have previously read to replace tires at 5 years regardless of use. In your opinion, or based on your experience, how soon should we be replacing these tires. Thanks!

[fj12ryder]

Personally I would figure 5 years from when I installed them, and also by tread depth and wear. Of course if they're weather checked badly I would replace them sooner.

[azdryheat]

Michelin says to start inspecting the tires when they are 5 years old and to replace them no later than 10 years old. Keep in mind this is for car and truck tires. I use their XPS Ribs on my trailer, which is a commercial grade truck tire that's also rated for trailer use.

If the tires are made in China I'd replace them immediately with an LT truck tire.

[donn0128]

That the same age my Michelins are, and they will go next spring.