I have my TC5 setup to run Stock Rubber on carpet. I used Juho's LRP masters setup and the car handles great. I just need to keep it off the boards...
the only thing I am doing differently is running a diff in the front, and the stock chassis with ITF top deck using Juho's top deck mod. I am going to get the ITF chassis and see if it makes a difference, but I doubt it will be much. The stock chassis seems to have enough flex to handle rubber tires just fine.