This is kind of a stupid question, but searching it didnt get me anywhere. I just bought some 99-00 Si rims, and I need to replace a couple of the valve stems. How do I go about removing them? I messed around with them for about 20 mins but couldnt get them off. Thanks in advance

 

theres a special tool u have to buy

 

pull the tire off the rim, and push the valve stem back to the inside of the rim.