I searched and came up with nada. Wondering if there are any TSB's or if anyone else has experienced this behavior on their 2005/2006 GT.

After a cold start and heading out to the highway, I have noticed a little vibration/shake in the steering wheel. I have not had my first oil change yet, but plan on having them check it when I take it in if it has not gone away. It is something that I have only noticed after the temp has slipped down below 50-ish.

Very strange - almost as if I got flat spots in my wheels from sitting because it does go away after it's "warmed up." Odd thing though is that it has not sat very long.

Anyone?

If you do a search on "flat spot" and "tires" you should find something here, I saw something in the "Issues" area. Performance tires are softer and (I'm guessing) they are more likely to flat spot temporarily.....not the braking type of flat spotting.

I have the EXACT same thing. only till it warms up, and only since it has been cold in the morning. EXACT same symptoms.

Me too, exactly the same.

Have you checked tire pressure...with it being cold out now this will lower the pressure...maybe you just need to add some air?

i am have the same issue.tire pressure is pefect...

I also have the exact same issue with my 2006 GT.

Same here.

yup, every day

Tires should be inflated when cold to the max tire pressure listed on the sidewall - not Ford's recommended tire pressure. Ford and Firestone are still battling over this and Firestone will ultimately win.
I've had the same flat spot issue until I bumped up the tire pressure.

This is particularly important in the geographic areas that get very cold.

I thought tires were supposed to be inflated according to the label on the car door jam. For my car it states 32psi cold and that's what I do. I don't seem to have any problems.

You're in Arizona!

Hey, I'm in San Diego, so I don't have this problem either. But I remember the cold days back in Minnesota. It's a fairly common problem. if it is really annoying you can get harder compound winter tires.

I have the same exact problem with my tires at 32 PSI. What pressure are you running Big-Foot? I couldn't find a max pressure listed on the tires?

I run my fronts @ 36 psi cold...no problems.

I run all four tires at 35 PSI... no problems here.. but then again I am in Los Angeles... :)

I have believed from the beginning that the AAI wheel balancer doing the balancing at the factory is off. When I picked my car up at the dealer, I had this shake. It was between 50 and 60 MPH. Above or below, no problems. I had the dealership rebalance the wheels and sure enough, they were off. Once they did that, car was fine until of course I changed the wheels. I haven't yet had time to get the exchanged wheels balanced.

Take it to the dealer and have them balance the wheels.

Got the same problem just noticed it today, guess thats another thing on the list to have the dealer check.

I have the same thing, also had it on my '03 Lightning. FYI I have Pirelli's on the Saleen.

I have noticed a slight vibration in the steering wheel when
I first drive off, but I always thought it was the highway in
front of my subdivision because the vibration always goes
away. The road was resurfaced the week I bought the car,
and I just figured they did a poor job. Cold not an issue here,
it happens at all temps.

If it stops after driving for a while, then it is in the tires. Regardless of temp outside, the tires are cold. Some tires tend to flat spot after sitting for a while. I wouldn't worry about it, but after about 5k miles, I'd suggest having the tires rotated and road force balanced on a Hunter machine.