1999 Chevy Tahoe At speeds 60 and above entire car shakes

SAM8642

MEMBER
1999 CHEVROLET TAHOE
V8
4WD
AUTOMATIC
80,000 MILES

Tires are wrangler rts 265 75 r16 with 9k on them. Cars always vibrated a little and balancing has helped but not fixed the problem. Front pads and rotors have also worn considerably for 9k milege of use. Mechanic says about 10% is left on them. Vibrations are seen in the dashboard and sears as well as felt through the wheels. The tires standard on these trucks were 245 but the dealer I bought it from said 265 was also an option and shouldn't affect anything. Have run out of ideas. Balances get thrown off easily from the vibrations. What steps should I take to fix and will the vibrations besides annoy me damage the truck?

Sunday, February 14th, 2010 AT 4:07 PM

2 Replies

JACOBANDNICKOLAS

MECHANIC
110,176 POSTS

The 265 is an optionial size, so that shouldn't cause a problem for you. Have they checked for a bent rim? Alignment? Can you drive throught the vibration. For example, if you feel it at 60 does it go away at 65?

Let me know.
Joe

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Monday, February 15th, 2010 AT 10:12 AM

SAM8642

MEMBER
2 POSTS

The faster I drive the more the vibration increases. Just came back from running it on the highway and balancing the front tires has helped a lot but it pushed the threshold of the vibration to around 70. So it still vibrates just at a higher speed. Rims have been checked as well as alignment. Any ideas about a bearing that's worn or could it be connected to a warped rotor? I'm assuming it's unusual for the balancing to be thrown off every 3k or so.

Thanks,
Sam

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Monday, February 15th, 2010 AT 12:47 PM