That sucks bro. I bought some michelin tires at costco a while back. Had them for a year and they were all weather cracked. Took them back. They said we can't do anything for you, "these tires are 4 years old". It was hardly my fault the asshats sold me tires that had been sitting somewhere for 3 years. Maybe same kind of thing happened to you.
Can you all please do tell the brand of tires and 2 questions
1 could it be from improper inflation
2 do you store it under cover?
That shouldn’t happen, weird
I have the stock Maxis and no issue on my 2020