Spent the past 8 months driving on PrimeWell all-season Chinese tires, they came with the car and I figured I would just drive them until failure and then replace. Stock 215/60R16 size. Finally had a large puncture this weekend then drove on the flat for 5 miles, so time to replace. Costco has $70 rebate on Bridgestone (made in Thailand), and they had the Turanza Serenity Plus in stock. WOW, its like having a new car! No more awful road noise, I expect fuel economy to improve a bit, now I can really hear the torn window gussets singing away ;-) The difference in ride quality is amazing. Moral of the story, if you're waiting to wear out some crappy PrimeWells, do yourself a favor and replace them sooner rather than later. Total cost with nitrogen fill, mount, balance, disposal was $572.96, $70 Bridgestone rebate expires Dec 29th.