No really sure how the rest of you take care of your tires but I still have the original set that came with the equinox. Right now they have 70,000 miles. I still have tread for about another 5,000 more miles. Balanced and rotated every 5,000 miles extends the life of any tire. I will definitely get another set !
Noticed cracking at the tread base and sidewall while checking rotors for wear after hearing noise. The cracking looks like tread separation from the tire body. The tires are original with approximately 39k miles. Mostly driven by cautious senior citizen wife.