[MattRain]

I'm not sure why you would want to use the Tetrix All-terrain tires, other than the part that they may look a little cool to you. I highly recommend against using these. Every team I have seen use these has problems, and never makes it past state/regional. Each tire is about 2 inch wide as well..

Is there a reason you need to have 3, 5" wheels on one side? Side by side, or in a row?

I highly recommend wheels from Andymark.com, as some are cheaper, while all of them provide better traction on the FTC Mats. (i.e Stealth Wheels, Plaction, or Performance)