Help with wheel/motor

Hello everyone! I have a motor but I don't know what type of wheel I need for it.

This is the type of motor I am using:

http://www.radioshack.com/product/index.jsp?productId=2911245&cp=&sr=1&origkw=9v+motor&kw=9v+motor&parentPage=search

I want to put a big wheel on it (not too big) so if anyone can help me find one that fits....it would be great!

Will not work…
Won’t work, dude. You need some gearing. Look through the forums, others have had this problem.

here you can find a little

here you can find a little article on why you need a geared motor:

 

https://www.robotshop.com/letsmakerobots/node/763

ahh makes sense
ahh makes sense now…thanks for the help guys!