2015 K900 Hankook Tires
At about 1,500 miles I started noticing vibration at around 65 mph. After a couple of trips to the dealer to resolve this, they decided that the tires were defective and replaced 3 of them. Interestingly enough, the one that didn't get replaced had had a flat and was patched. At about 22K miles, vibration started up again. After about 6 hours of driving at 83 mph, I took it to Discount Tire to get an objective 'inspection'. It took the attendant about 3 minutes to discover that the tread was separating on the front/passenger tire. I had the dealer come out with a wrecker and tow it in because I didn't think it was safe to drive. After the service department looked at it, they said it was out of warranty. In my opinion, the isn't a warranty issue, it's a poorly manufactured tire that has a history of problems and they know it. So, I'm going to replace all 4 of my tires at Discount Tire with something other than the POS Hankook and send them the bill. They won't, of course, pay it and then I'll take them to small claims court. There's two things I'll never buy again - Hankook tires or any Kia product.