2017 Lincoln Continental Tires

These were fine for about 6 months and 4500 miles. After that, the ride quality steadily diminished. Now, after 1 year and 8k miles on a 2017 Lincoln Continental, ALL FOUR tires are failing catastrophically. The tread is separating from the main body of the tire, and cord is visible on the inside edge of all four tires, regardless of placement on the car. My mechanic showed us the issue while the car was on the lift, and warned us to keep it off the freeway. Zero response from Lexani so far. These tires are dangerous and should be avoided at all costs