I've wanted a 4wd stadium truck for a long time. Some/a lot of people will call them mini truggies because of the rear wing. DHK, Hobao/Ofna, and Helion were atop of my wish list. When Tekno came out with their ET410, I knew it was time to join in the 4wd stadium truck fun. For me, I live for running Pro-Line Badlands tires on my 1/10 scale RCs. The only problem with that... Pro-Line doesn't make a stadium truck 2.2" Badland tire. So, I choose to run short course wheels & tires on my 2wd/4wd stadium trucks to get the awesome tread pattern.
My 1/10 scale 4wd stadium truck with short course wheels & tires on it:
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I'm just trying to show you a possible option to go with on your wheel/tire dilemma. The SC tires give a bit more ground clearance to an RC 'cause they are a bit taller. I'm 99.9% sure your Raz-R uses 12mm hexes on the axles. As long as you are running wheels with 12mm hexes... you got options.