Kia Motors K900 Tyres

I purchased a set of 'Continental Extreme Contact DWS06 Plus) tires for my 2015 KIA K900 from Discount Tire back in Jan, 2022. I think these are the same you're asking about. Yesterday, had a nail in a tire and took it there for them to fix. The store salesman informed me my tires were getting close to being considered for replacement due to wear (around 3-4/32" tread depth, mine were at 5-6/32"). Given these are 50,000 mile warrantied tires (based on 2/32" tread depth) and I've only driven them about 13K miles, I was in disbelief about how bad the treadwear life is on these. At about 26% of the 50,000 mile warranty, they've worn about 63% of the useful tread life (based on 10/32" new and 2/32" end of life tread depth). Everything else about these tires was good, but the tread wear is abysmal. Also, driving a tire to 2/32" tread depth is almost suicidal.