Here we are again, year 2, had my tires changed for new winter tires. Front end started to vibrate immidiatly after leaving dealership. Went back to have it checked (never know, might have forgotten to bolt something back). Dealer says it's the tires, removes them to check balance. Everything is OK. Puts them back on the car, go for a test drive, vibrates less but it's still there. Finally agrees to turn the disk again. This time they remove the disks and has them turned off the car. Puts them back on. Less vibration, but you can still feel it in the steering.

Well, tire changing time again, vibration is back, finally figured what was going on, it seems that all my troubles come from the fact that the dealer mechanic was not using his torque bars when installing the wheels back, the disk, being a bit on the weak side, warped itself and that was creating the vibration.

We are now over the warranty, it ended at 60,000KM. So the dealer says that we need to change the disk and pad $6-700.00. Told him to forget it. Went to an independent brake specialist, that is when I learned about the little problem. Says that whenever they machined the disk they just created extra wear and weakened it even more. Got new disk and pad installed (not from the manufacturer) All I can say is WOW!!!. No more vibration, not even a little. Totally different car to drive. Is it because I was not fed B**S. Don't know but I've been driving for 2 months and even had my tires changed and there is still no vibration.

I recently purchased a used 2005 Pontiac g6 with 53,000, quite a bit of miles. I noticed that when i was going on the freeway when i hit about 80 mph or so the car just had this bad vibration! i was scared that something was wrong. I took it to the dealership where i bought it Power Toyota in Tempe. The mechanic told me that all cars make this vibration its normal, the tires were new the only thing he suggested is just to let it be, it would cost me more money to get better quality tires when the ones i had were already new. Then just recently i noticed that when i brake sometimes the car will shake violently as well. This is gone way out of line now i'm taking it to a certified pontiac dealership to get checked. The vibrating is severe.

There is a vibration at various speeds. Dealership can not correct. They say it meets Spec. after 5 trips to the shop -- indicated bad tires. Had a mechanic to drive, balance and drive again. Still there. Dealership took me in another G6 -- vibrations there -- He tried to indicate that is how it is. I asked "So all G6's have a problem" - He said "no not all. Lets talk to a salesman about a trade." My car has been the shop at least 1 month out of the time I had it. First report was less than a month after purchase.