Toyota - Tacoma :: Wobbling In Steering Wheel And Front End In General

I bought new tires for my 2005 Tacoma 4x4 and went up from 265's to 275's with some really nice Pirelli Scorpion ATR's, problem was, I started noticing some serious wobbling in both the steering wheel and the front end in general, it seemed to be at certain speeds. I had done some research online to find that some people had trouble with the balancing on those Scorpions so I naturally thought they needed to be rebalanced. But balance after balance, nothing seemed to improve. In total I went in for balancing 6 times! Even went to different places to make sure I didn't get a machine that was somehow calibrated wrong. I also took it in to the dealer and had them look at everything to make sure all was well with the truck, they said everything looked fine.

So my frustration finally came to a head last month when after another balancing the wobble was still there, and I decided to change out the tires thinking I just got a bad set. I test drove the truck right after changing the tires and could feel a little wobble so I took it back and they re-did the balance. Sadly that was rush hour and I couldn't get up to the speeds that I normally felt the wobble. (usually between 55-65mph) The day after switching the tires, (new tires are back to 265's Falken Ziex all season). At first I thought the wobbling was speed dependent; BUT after setting the cruise control on the open road at 72mph I started to notice that the wobble would come and go seemingly at random. I started thinking that it may be the road surface but put that theory to rest when I felt the wobble on brand new paving (yes, believe it! The wobble just seems to come and go even at the same speed and on seemingly similar surfaces. It's driving me crazy! I have to believe it's not the tires that are causing this, but since the dealer can't seem to reproduce the problem when they test drive.

So to summarize; the problem seemed to start when I got new tires a year ago, rebalancing 6 times did not solve the problem, put new tires on and still getting the wobble. It doesn't seem to be as dependent on speed or surface, although the worst of it happens in the 55-65mph range. (If I go faster it seems to smooth out, but we're talking 75+) The wobbling is felt and seen in the steering wheel and the front end of the truck. (my gut tells me it's coming from the front right of the vehicle). I even had them do an alignment so it's not that either.