HELP! tires shake a lot

Hi my car shakes a lot, a lot means a lot like earthquake, when tires hit a bump or a hollow at over 30 miles. Can you tell me where is wrong and I need
to fix?
Thanks Maro
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if it is the front shaking i would check the steering linkage (tie rods, idler arm, etc) for anything that is loose. my '87 trans am i use as a second car shook like mad when i hit a bump, i replaced the idler arm and everything was fine after. maro wrote in message ...

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May be massively worn struts as well.
-- 98 Camaro

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which struts?? timing belt?? my timing belt is new.
--
Maro (Masahiro Machizawa)
Laboratory Specialist
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struts= FRONT SHOCKS! my god man.

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