I was asking, because a number of things should be considered when you grade your wheels.
Radial runout - Wobble and spin is one of the first things most people look for.
Circumferential runout - When you spin the wheel, how does the tread look? Most people wont have a runout gauge to see what the wheel does, but if you can see the tread moving up and down, it will cause your car to hop, skip, and jump going down the track...
Bore condition - Take a look inside your bores next. If your bores are junk, be careful with where you put that wheel. Better yet, trash it and make a trip to the scout shop and buy a couple more tubes of wheels. Pay attention to your bore sizes as well.
Consider all of these things when you are grading your wheels. If you are able to match up your molds, you will generally be more consistent with your wheel properties.