steering wheel vibration

[timberwolf2010]

I have an 06 f250 sd powerstroke 4x4 with 23K miles(bought is used a few months ago). When it is cold and the tranny shifts into overdrive and I am assuming the torque converter locks, the steering wheel vibrates between 45-50 mph. Once it warms up, I do not notice it. I do not feel the vibration elsewhere, just the steering wheel. My initial thought was the torque converter, but I would think I would feel the vibration all over. Any ideas?:

[brob1969]

Have the tires checked; I was having the same trouble on my '06 2WD. I went to the shop to have the alignment checked and turns out I have a tire with a belt separated; going in tomorrow morning to have it replaced.

[Lbs]

If you're feeling a vibration between 45-50 then it's the tires. That's usually when they show their problems. They either need to be balanced or as stated before a belt may be broken.

[brob1969]

Just got back from getting two new front tires ($530 lighter in the wallet) and it's like driving a brand-new truck! The wobble is out of the front end and steering is effortless.

Hope your problem is simple to solve; let us know what you find.