Why can't I get the tire off the rim?

There could be several reasons why you are having trouble removing the tire from the rim. One common reason is that the tire may be stuck due to rust or corrosion. Another possibility is that the tire may be overinflated, making it difficult to remove. Additionally, using the wrong tools or techniques can also make it challenging to take the tire off the rim. It is important to use proper tools and techniques to avoid damaging the tire or rim.