I bought four Nankang tyres, two in April 2022 and another two in December 2022. I hardly drove any distance when I saw cracks on the tyres. On closer inspection, all four developed cracks, even the ones that had been on the car for less than four months! I contacted the garage, and they kindly replaced the tyres. They swapped them for a different brand because I didn't want to go with Nankangs again. I now have four Falken tyres and they feel much better.