I got four new tires on my car at Costco several months ago and all has been great. On Monday morning, car was good. Monday evening, after my wife had run some errands with it, it had a strong shake at freeway speeds. I couldn't tell which corner was causing the shake, so on Tuesday morning, I had the local Les Schwab balance all four wheels.. When the tech was done, he told me the left front wanted 8 oz. and that that tire was defective. He recommended taking it back to Costco to have them replace that tire under warranty. He said he got it all balanced, but the problem will keep coming back until I get that tire replaced. I asked why has it been problem-free for months and then suddenly bad? My assumption was that the wheel tossed some weights, maybe from hitting a pothole just right. He didn't have an explanation other than to say it will just keep going bad and that balancing it is a temporary fix.
I left the shop with my freshly-balanced car and got on the freeway. It was no better. It shakes pretty violently around 65 MPH. At this point, do I go back to Les Schwab and tell them to fix it? Get my money back and go elsewhere? Is there any validity to the claim that the tire is defective and that it can't be permanently balanced?
Such a PITA.