Joe417 wrote:
What JimK said, I've had the same experience. I experienced one set that looked perfect, no dry rot showing, I think 6 years old. Decided to change them. When they let the air out, several tires had 1/4" cracks open around the bead.
I don't let mine go more than 5 now.
This however is very good info I hadn’t thought to share.
Sidewall cracking is far more apparent when the tire is flat or very low on pressure and deformed significantly.
Good way to check is air it way down and see if cracks appear where it’s squished.