Currently costco is having a sale on tires, and I need new tires bad. I want to go with something a little larger than I have, so I am thinking of the BFG Radial TA's 31's. I had these on my CJ7 years ago, but I never had the top on it so I could not hear a damn thing. Does anyone have these onf a FJ60 and how much noise can I expect?