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wheel balance/driveline vibration

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 1975k5, Apr 1, 2001.

  1. 1975k5

    1975k5 Registered Member

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    I am currently running 35x12.50x15 radial all terrain tires mounted to 15x10 wheels. The wheels are the wagon wheel type painted black. I am unsure of the brand or history since I bought the blazer a few months ago. I cannot get this wheel-tire combo to balance out. I have had them balanced twice with no improvement. Does anyone have a way to check for a bent rim? I have had someone drive beside me and they say the tires and wheels do not appear bent. What about the possibility of an out of round tire? Any help??
     
  2. Can Can

    Can Can Pusher Man Staff Member Super Moderator

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    Are sure your problem is in the wheels/tires? Considering you've had two wheel balances done in the recent past I would start to look at other things like loose or worn wheel bearings. What exactly does the vibration feel like? Or is it more of a wobble? Give us a wee bit more info.................


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  3. 1975k5

    1975k5 Registered Member

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    At slow speeds, it feels like one of the wheels is bent because there is a definite side to side wobble. I can not seem to narrow down which corner it is coming from.

    Tom
     
  4. Wheels

    Wheels 1/2 ton status

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    I had a balancing problem with a set of BFG AT/KO's. They would balance but required an excessive amout of weights to do so (7 to 10 ounces). Rotated the tires on the rim at 90 degree intervals but this didn't help. The store said it was the rims and I had them spin the rims with no tire and they were perfect. Ordered new tires and the problem was solved. If you have a bent rim, get it off of there. It will cause other problems and wear out wheel bearings, ball joints, etc (not to mention the tire). To check for a bent rim, support the vehicle on jack stands and give each tire a good spin. Use a piece of chalk and move it closer to the tire until it just starts to hit (try to steady your hand and do the marking on the up side of the spinning tire). The chalk will leave a contact mark as it hits the tire and it should be even. If not, more than likely the rim may be bent. Try this several times to get repeatable readings.
     
  5. ftn96

    ftn96 1/2 ton status

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    If its not a bent rim I would definately check the wheel bearings next.

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  6. HarryH3

    HarryH3 1 ton status Author

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    Any decent tire shop should be able to check all of those things for you. They have specs for what is acceptable lateral and radial runout for the tires and for the rims. Ask them to check it for you.

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