Cracks around tires?

[66stingray]

2016 Yukon XL with original Bridgestone Dueler tires. I noticed there are lines around the tire that look like cracks going around the circumference of the tire. I do not remember seeing these before. The tires only have 15,000 miles on them. Safe?

 

[Dantheman1540]

Only 15k miles but are they the original tires from 2016? If so they are 6 years old now and likely dry rotting.

 

[swathdiver]

2016 Yukon XL with original Bridgestone Dueler tires. I noticed there are lines around the tire that look like cracks going around the circumference of the tire. I do not remember seeing these before. The tires only have 15,000 miles on them. Safe?

They are dry rotting. Down here in Florida, we're lucky to get 4 years out of a tire before they rot off due to the sun's rays.

 

[Bill 1960]

Check the date code on the sidewall and read Bridgestone’s warranty document. It’s possible you’ll get replacement tires.

 

[Joseph Garcia]

As stated above, that is a sign of dry rot, and the tire's structural integrity is being compromised.