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I have a 2008 Buick enclave that has had a very bad noise at 45 mph and 65 mph. The dealer said it was tire noise. $1000 dollars worth of new tires and I still have the noise.
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Road noise is usually related to your tires. I would go to a tire shop and have them check it out. If your alignment and tire condition in general are good it might be the stiffness or aggressiveness of the tread.
I recommend you check your tire speed rating and heat rating, sounds to me that you may have the wrong tires. I bought some cheap tires once for a TransAm, scared some sense into me, always check for a good rating on the tires, when they heat up they will float all over the road.
A vibration such as you are talking about could be caused by more then one thing. First it could be caused by a broken belt in one of your tires. I could also be caused by a bent rim, a warped rotter, or a bad cv joint. I hope this helps you solve your problem.
ok first check to see if you have a tire separation the tire will have a high spot in it you can jack up the car spin the tire if there is a tire separation you can see it as the tires spins this is the most likey cause...
it can be any of the above, rotate the tires and see if the noise location seems to change, but the last thing i would suspect is the CV, they just click when turning, the wheel bearing is my choice here, they roar, tires make a diff noise.
you have a computer for your control on your car. It is set up so only the factory front and rear tires sizes will work, any change, it picks it up. this should solve the problem.
Chevrolet has a common problem with integral hub and wheel bearings wearing due to exessive use or lack of lubrication, the balls or rollers and races become pitted ,scored or just plain damaged which will infact cause a loud humming or growling noise. I have had some humm at about the same speed but usually they will start to make noise at any speed. I would have to hear the noise to be sure cause there are many things to cause a humming noise like odd tire wear, bad idler pully bearings, e.t.c. the tires should be lifted checked for excessive play in the bearing. Take tire off depress brake piston in just enough secure brake rotor use stethoscope spin hub while listening. maybe he replaced wrong side seen that alot, seen tire noise mistaken for bad bearing to if struts or shocks are worn can cause tires to be choppy. I would recommend taken back 300 dollars is alot of money to not fix your problem.
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