My Hyundai shakes at about 120km/h but it shakes for about 2 seconds, then stops about 2 secondes and then starts again like that. Is it wheel balancing? Or something else? I just find it strange that the shaking starts and stops like that.

could be a high speed unbalance. Check the front alignment, and have the toe set to 1mm TOE-OUT.

Hi,

What tyres are you using?

You get what you pay for after all. Some can be less round than others.

As Duke says, and I defer to his judgement, get the toe checked as well as balance.

Bye for now.

Andrew :57:

Thanks for the responses. I just got the car and had new Michelins put on. I will get it checked out again.

Yeah, sounds like a wheel roundness/balance problem. Mine does it too after $450.00 worth of new Michelin's.

What's happening is as you go around turns on the interstate it gets two or more of the unbalance on each tire to be in phase at the same time which gives you the shakes until two or more tires are no longer "in phase". In other words the heavy spot on your left wheel no longer lines up with the heavy spot on the right wheel on the same axle when the shake disappears. The next time you make another turn at speed it comes back.

Find a shop with a hunter road force machine and they can get it fixed for you. Places like Olson Tire, Sam's Club and Tire Kingdom typically don't have that type of equipment. That machine allows the tech to match the high point on the tire with the low point on the wheel.

Wheels and tires on all new cars are match mounted at the factory to prevent the vibration problems you are experiencing now.

I had a brand new set of Mich's on my Mustang that shook terrible until I had them roadforced. Huge difference. I had up to 21lbs of road force variance and they got all four of them within 5-7.

This post has been edited by goldduster360: Jun 8 2005, 02:18 PM