4XHHR

I recently replaced the original Firestone tires with GY Assurance CTs. Also the dealer replaced the rotors and pads due to pulsation. I have since had 2 tires replaced, 2 road force balances performed and I still do not have the vibration issue fixed. The vibration is noticed in the steering wheel and the column as well as in the seat. I have most recently tried another shop, but no resolved yet. I have asked if rotors could ever be the cause, ie. rotors out of balance. All have said no. So, do I have a compatibility issue with the Good Year Comfort Treads? The vibration was not present before the new rotors and tires were installed. Any suggestions will be appreciated.

whopper

More info is needed. When do you feel the vibration? Only under braking, or at all times? If it is at all times, does it get worse under braking? Have you swapped the front wheels/tires with the rears yet?

firemangeorge

And. Are you using any kind of aftermarket rims?

4XHHR

Vibration is present at highway speeds. Most noticeable 65-70+. Car is stock except for new tires and front rotors. No brake pulsation. New tires have been moved around and road force balance twice. Current miles is 30912.

whopper

Sounds to me like it is the tires causing the problem. As the vibration wasn't there prior, the suspension should be ok - the rear bushings on the lower control arms are known to go, but I would not think it's likely at such low mileage on a 2011.

This is a hands on type problem you are looking at - and we can guess and guess for days as to what the problem might be, and never get it right. You really need to keep hounding the tire store where you got the tires in my opinion. Going to other stores is just going to cost you $'s.

And no, it is extremely unlikely the rotors are out of balance - the tire shop should have already checked the tire/rim for lateral runout (side to side wobble) as there is a chance that the front rotors were not mounted to clean hubs. That might be worthy of checking into - you pretty much have to pull the rotors and check and have the brake/tire shop check the rotor for runout.

If all that checks out and tire store can't get rid of the vibration, insist they swap them out with something else.

4XHHR

Thanks for the quick replies. I'm starting to investigate other tires. I wanted to be armed with some new thoughts when I go back the dealer.

Oldblue

I wish I was closer, I'd mount up one of my known good set of tires to prove it's the tires causing the issue , however it could also be a matter of over torqued lug nuts, 100 ft lbs total no air wrenches please!!

Devildog75x

did you ever figure out the problem?

donbrew

Anybody thought of hubs?

whopper

Ahhhh add that to the list. I've never had a hub go on the HHR, but have on other vehicles - usually a massive wobble, or a real nasty noise - not quite what he describes. But add it to the list. I'd expect that when the brakes were done a hub problem would have been noticed at that time ???