dont slap me for saying this
its the
american workers.
I drive my wifes 02 4 runner and its FLAWLESS- no vibrations, everythings super tight.
My 03' is real nice but its a far cry from the Jap-Spec trucks. This is what happens when they build trucks in the USA IMHO. I dont care if anyone agrees with this notion but i know its the truth after owning and driving multiple Toyotas.
Now as far as the vibration - Id check these in the order listed.... Tire/wheel balance, next id check for improper setup of the ring/pinion gears (metal frag in oil after second oil change???), if that isnt it then id go to the drive shafts and reballance them, then id go to the U-Joints and see if they are installed correctly (improper tq. on one side of the U-joints can cause the bearings to be out of round)
All of these things can be contributed to
BAD assembly and not faulty engineering.
I am an american and im in support of American workers and Jobs BUT i cant tell you how much i wish the Tundra was assembled in Japan!
The glory days of Japanese vehicles is gone - Unless its truly built in Japan. IMHO