Problem with tires

[AnabolicJ]

Hey guys I'm having some troubles with some new tires. I put some Toyo Versado LX's on my '07 3 GT. They're the same size as the Eagle's that were on there. Once I got these new tires on the highway the steering wheel started shaking and the car pulled to the right. I took it back to the tire dealer and he rotated the tires front to back then left to right. They also balanced them twice the road force balanced them on the Hunter. The steering wheel still shook at about 100kph. I took them to another place and they said the balance was right out of it, and they did the balance again. $70 later it feels like they complicated the problem. The shaking still comes up intermittently at around 100kph, but now the car pulls HARD right. They then told me it might be a problem with my car(which I have a hard time believing, as these problems happened immediately after the new tires, and I've only got 15Ks on the car). Anyways, sorry for the long post, but if anybody has any insight to this situation it would be greatly appreciated.

 

[Hirudin]

It may be a problem with the rotors, if you torque the lugs down too much it can tweak the rotors which will make the car shake. When the tire shop put your wheels on did they use a pneumatic/air wrench?

I'm guessing this isn't the problem, but different road surfaces can do what you're describing. There's a stretch or road here in Albuquerque (I40 westbound) that will make my car feel like a wheel is falling off. In that stretch of road the front tires will turn left and right fairly quickly.

 

[AnabolicJ]

The used an air gun to put all the nuts back on, then the one time I watched them they used a torque wrench. I don't know the torque settings nor have access to a wrench. And this shaking has been consistant on all roads and highways.

 

[Hirudin]

Sorry I didn't say this before... Shakes and rattles can become very bad news, get that bad boy checked out ASAP! Listen to a couple episodes of Car Talk with Click & Clack, they are always yelling at people for ignoring such things. A wheel coming off at highway speed will not end well!

They're suppose to be torqued to something like 60-90 ft. lbs. I did mine to 80 I think.