Today change my Year 2016 RE003

Drive until koyak (outside layer)...dont know why. No unusual happening also

I often (1-3 / month) visually inspect also can become like that...because this is on the inside of the tire so visually couldnt spot

2 tires of 4 like that eventhough outside thread look still acceptable for daily use but inside part hard to see
My mom recent 5yrs old tire also replaced with new because our hot climate if car under d sun 5 yrs is max if you value your life. Threads still good but 5yrs tire show signs of 'wrinkle' like dryness on the edge of the tire is waiting for due time so for those who drive tire more than 5 years I srsly salute you.

But i think im extremely lucky...
So this experience I feel want to say Bridgestone Tire damn quality that drive 120kmph with this unknowing condition but didnt burst
but 10yrs tire? 6 yrs also I dont push my luck

I meant to say damn *good quality. There was typo there
But in honesty, i changed my mom low mileage 2016 HRV factory Yokohama Blue Earth tires also 17''...4.5yrs car 28K km but oredy show visual signs of dry n crack in the tires edges.....thread still alot . Car always park indoor no sun dry parking also premature 5 yrs also the compound dried up . This is yokohama not china.

We didnt want to take d risk and changed all four tires...which was around rm1.2K for 4tires after 4.5yrs use.

Low mileage 5 yrs tires still want jimat 6-10yrs.....no thank you for me.
But im not to judge.