Description Changing your tires just got a lot easier with these inexpensive tools. It's so easy, you can even change a tire at the flying field. HOW TO USE Simply cut the old tire free with a sharp knife. Choose the correct size tire change cone for your tire diameter and insert its dowel pin into the wheel bushing. Spray a bit of WD-40 on the cone and tire. Use the machine cut Wooden Push Tool (sold seperately) to press the tire over the cone and onto the rim.