Your kidding right?  You don't want to spend the extra cost, a few dollars. I have to say that your probably not going to be in this hobby very long if 3 dollars hurts . Heck if you were here I'd give you one. Ask around at your club , I'm sure someone will give you a freebee. The cost of an extra tire which you may or may not ever use is a rather minor thing in this hobby, even for a beginner.