At last, Chinese tires perform a beneficial function

The longer explanation is more nuanced, it's not simply poor quality tires that made them fail, but a combination of underspec'ed tires and lack of maintenance, leaving them to bake in the sun without protection or moving the vehicles.

I think all of here know what happens to tires if you exceed the load rating and leave your RV exposed to the sun and never move it.

https://www.defenceconnect.com.au/land-amphibious/9612-poorly-made-chinese-tires-a-new-theory-on-russia-s-slow-advance