Hi sifus, i looked all over google but can't find a similar crack pattern that is same as mine. Mine seems to be a one line pattern following a 'longkang' in the sidewall of the tires.

Is this a sign to change tires? Is it still safe to drive?

The tires manufacturing date is Dec 2018. Almost 6 years of age.

😮😮 I'm way overdue then. Thanks so much for letting know, sifus. 🙏 Will change it as soon as able.

Is this considered the rubber hardening and weather crack?