Feels like you dont drive often since the thread looks pretty good. Since its on the edge of the sidewall, change if you want to avoid any unfortunate incident. I personally have driven 10 years on my previous set of CSC5 (that came stock with the car) and its a weekend car. No cracks but can feel the tyres isnt the same as when its new. Noise level is terrible, uneven wear, but it didnt cracked. Change it to Hankook Prime 3 earlier this year and much more comfy.