I own a 2019 Hyundai Sonata with an original manufacturer set of 205/65 R16 95H Kumho Solus TA31 tires on it. I noticed around a month ago that all 4 of the tires have cracks in between the treads, mostly on the outer and inner treads of the 4 tread areas. These cracks are all around and significant. I am afraid to drive on them. I have brought this defect to the attention of Kumho tires over the phone and to the dealership I bought my car from. There is approximately 34,000 miles currently on my car. These tires are supposed to rated for 60,000 miles. They are trying to tell me that they will not warranty their tires with ozone or weather cracking over 4 years old from the date of the tire manufacture stamped on the tire. I believe this is not weather related. I believe it is a defect in the tire and they are trying to blame weather. Even if the problem is what they call "weather" related that should not preclude a consumer/purchaser of a vehicle with their tires on it from pursuing a claim. Their tires should be able to withstand any "weather" and if not they should inform consumers as such. This is a "safety" issue and should NOT be taken lightly. I would like the NHTSA to investigate this issue further. Thank you.

- West Peterborough, NH, USA