How to remove a "flat spot" on a wheel
Unfortunately, there is nothing you can do to fix a flat spot on a wheel. Crying a little or laughing at the fart noise might help the situation. Even if you were able to make the wheel round again, you'd have one wheel smaller than the other three.
So, you'll need to get a new set. This happens from sliding or doing nose slides, tails slides, blunt slides, power slides and drifting.To avoid this from happening again, select wheels with a harder durometer at 100A or 101A.
Most street skating wheels are between 97A - 101A durometer.