I hit my break very hard, wheels were locked and in result I have flat spots on the tire. After that incident I had very distinctive knocking coming from the front wheels. I moved them to the back, it was better but still very noticeable. I had relatively new new tires from Costco so I talked to them, they re-balanced the affected tires and told me, that with time it should even up. It is now roughly 3000 miles with new balance and in my perception is not better and rather worse.
Should I be more patient and drive more, or ask for re balancing again?
I heard that tire thread can be shaved to match? If yes, who is doing that? Or should I just replace the tires (there is still at least 2/16" of the thread at the flat spot). Any help will be very appreciated.