Should I replace OEM tires on my 2021 Tab400 Boondock just due to age?

Simbionic

Tread is fine…..thinking solely about ageing and blowouts. 

Which brand tire is recommended replacement?

tabiphile

It depends..... how is your boondock stored? Has it sat with its full weight on the tires or do you relieve them? What kind of conditions have they been exposed to? High/low temperature extremes can shorten tire life. How many miles do they have on them? 
Are there any sign of checking/drywall damage on the side walls?
It is common to replace tires within 5 years, but you might be told to replace them in 3 to 7 years. 5 seems like a good compromise, presuming proper storage. 

pthomas745

Lots of different threads on tires.  Have a look at your tire sizes and match up what  owners discuss in these threads.  

https://www.google.com/search?q=400+tire+replacement+site:tab-rv.vanillacommunity.com&client=firefox-b-1-d&uact=5&oq=400+tire+replacement+site:tab-rv.vanillacommunity.com

Simbionic

Thank you. Maybe 12,000 miles on them. Sits on gravel, fully inflated, NE Florida elements. 

I will inspect. What is a good replacement? Same as OEM?  Easy to obtain?