I just bought a used and slightly beat up WCM Grand National and I'm hooked on the hobby. Spent the last week or so fixing and tuning it, having a blast so far. My first question is, since this car is a bit large for day to day driving, what 1/16 - 1/8 scale nitros would you guys recommend? Mostly on road but I want to have the option of going off road so probably a buggy or low truck or something.

Secondly, are there any pneumatic tires available for 1/5 or quarterscale cars/trucks?

Thirdly, just to get a sense of how much trouble im now in, how much do you generally spend monthly on the hobby?