I am a master mechanic and work at a tire shop. I hope this information can help everyone. If your vibration is below 30 mph it is separated, above 30 it is balance. If the vibration is in the steering wheel, it is the front tires. If it is in the body or seats, it is the rear. Vibration under acceleration only is the drive shaft bolts loose(happened twice to me). Warped rotors will vibrate under braking only. An alignment issue will never cause a vibration. The alignment should be checked every 12,000 miles. I recommend purchasing a lifetime warranty alignment. A pull will not cause tire wear. It is the things you don't feel (toe and camber) that cause wear. With the high caster on these cars, I recommend rotating the tires at least every 3,000 miles. This will reduce the chances of the front tires cupping and having edge wear. It will also keep the rear tires from wearing out in the center as much. This is also a good time to check the oil level. With synthetic oil, you can loose as much as 4 quarts of oil over a 6,000 mile time frame. If anyone has any questions, feel free to email me at [email protected]
Sounds like alignment. I had a 325 BMW that was notorious for it. The rotors had to be PERFECT for brake shimmy not to happen. If I set a little more camber+, the problem was much less pronounced.New tires, still shakes, still pulls
Sounds like alignment. I had a 325 BMW that was notorious for it. The rotors had to be PERFECT for brake shimmy not to happen. If I set a little more camber+, the problem was much less pronounced.
Id make sure the camber, caster and toe were all in spec. MacPherson strut setups like ours have little or no camber or caster adjustment capability, leaving just toe for adjustment. In fact the GTO may have none. - Im not sure as I have not had it to the tire shop yet. You may want to install camber plates in the towers, as it is a fairly common thing to do with MacPherson suspension.
Have it checked out. You may want to do a check of the tires you bought by reading the reviews on tirerack.com. The ones you have might have a habit of tramlining, and this will make an alignment issue seem worse.
I got the numbers before they aligned it, didnt get ones after.Did the tire installer say anything to you about a bent or out-of-round wheel? What tires did you go with?
BTW. If the camber and caster is not adjustable as I suspect it is not, those settings may be way out and the dealer wont say a thing. Maker sure you see the numbers and that they are in spec.
I had a problem for a while but if your sure the tires are balance. You need to torque your wheels to 55 foot pounds in a star pattern and then re-torque 95 foot pounds. Also if you don't have line locks to lock the front wheels you might want to have some press on the brakes as you are torque to lugs. Make sure the the wheel is not touching the ground when you torque. There is to much deflection in the hubs rotors to do it when the wheels are on the ground.I been having an issue with my steering wheel asking approx 60mph. Still doing the same after the alingment, what else to look into that could be causing it
Mine happens anytime, you cant watch it bounce around when driving it, someone on passenger seat can easly seeI noticed on my m6 06 that the tires get out of round overnight and tend to vibrate for a few miles and I also get a hardly noticeable left to right movement of the steering wheel around 60 to 65 mph I have also noticed if the front tire psi is not exactly the same on both front tires it will pull just a few psi dif. and it really can make it pull hard