Can you put bigger tires on a BMX bike?
You can’t go larger because the wheel will hit the frame, and you usually can’t go smaller because the brakes won’t work, or the pedals will hit the ground. Tire width can be changed to a degree.
Why does my BMX tire keep going flat?
Some of the most common reasons your tire will become flat include: Punctures by a sharp object. Failure or damage to the valve stem. Rubbed or ripped tire.