I ve run into this problem with a couple sets of tires when trying to get them balance. When you order tires you have no idea how the inserts are and what condition they will be in. When they are folded or creased like always in my case you can pull them out try to smoothen them out but usually the memory of the foam will come back when you re insert the foam,,,inevitably giving you dimpple effect in your wheels or throwing them off balance. I ussually order all my tires so checking the foams condition ahead of time is not an option. Does anyone have a remedy or a trick i dont know about that returns foam back to its fully round shape without the memory screwing up your final mounted tires that yopu spent $40 for.