tires

Costco sells 3 "OEM" tires for Bolt. I can't see a difference other than tread depth on 33539. The only one in stock is 16798. Allegedly, only 33539 is self sealing, which is out of stock, but site doesn't mention SS. If that's true, why are the others listed as OEM if they were not sold on...

As the title says, has anyone had the Continental PureContact LS on their Bolt for over a year, and how would they rate the tire now? From what I understand reading other reviews, the tire has a greater impact on range when new (under 1000 mi), but this impact goes down as the tire is broken...

I picked up my 2020 Premiere in Atlanta at 11:30 last night and could not give it a good OTD onceover before I drove away. Is there supposed to be a tire inflator with the 2020 or do I need to purchase one? Thx

Anybody had any experience with these tires? Big sale on at my local Samsclub on Pirellis (all), and I am considering these and the Cinturato P7s.