I am in the same boat as Woodson, my stock tires are about due to be replaced on my 04 DC 4x4 TRD taco. are the BFG Mud tires more rugged than the stockers? I have run the BFG mud terrians on my Jeep seems like from when they were first available and have had it though the Rubicon, etc. with no problems. although my taco does not see the off roading that the Jeep did it would be nice to have a more rugged tire. the only downside would be the howling from the Mud BFG.
how big of a tire could you go to without having to re-gear? I would not have a problem upgrading the suspension to a reasonable 2" or so lift.