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Corvette C4 Forum 1984 through 1996

rough ride

  #1  
Old 05-19-2019, 01:30 PM
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Join Date: Mar 2009
Location: Prospect, Ohio
Posts: 16
Unhappy rough ride

I have been on here before asking for help on this issue. Originally on occasion you would be driving on the highway and for no apparent reason the car would begin to vibrate as though you actually had a flat tire. I replaced the tires, replaced the adjustable shocks with a standard shock which did not resolve the issue. Most recently through help on the forum I replaced the rack & pinion.
Although the ride does not react like driving on a flat tire, it stills vibrates badly on occasion. Just had it out today and it did it after driving fine for several miles. Don't know what to do next any advice would be greatly appreciated.
 
  #2  
Old 05-23-2019, 08:00 PM
espy1949's Avatar
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Join Date: Feb 2019
Location: parrish florida
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Default vibration

Originally Posted by Tom G View Post
I have been on here before asking for help on this issue. Originally on occasion you would be driving on the highway and for no apparent reason the car would begin to vibrate as though you actually had a flat tire. I replaced the tires, replaced the adjustable shocks with a standard shock which did not resolve the issue. Most recently through help on the forum I replaced the rack & pinion.
Although the ride does not react like driving on a flat tire, it stills vibrates badly on occasion. Just had it out today and it did it after driving fine for several miles. Don't know what to do next any advice would be greatly appreciated.

hi tom have you checked all of the u joints? they can cause vibration
also i know you got new rubber what brand did you buy and were they road force balanced ? (a means of detecting sidewall issues) rather than standard computer balancing. look it up on line.
i have a vibration , had my tires rebalanced with no luck. some one on the forum gave me the heads up
i found a shop that had a road force balancing machine. when the mechanic finished up he informed me that both my front tires were out of spec by 30 percent or more which is y they vibrate.
limited to the steering wheel only. he was able to improve them by 30 to 40 percent based on before and after. i'm running nittos which appear to be a decent tire for the dough.
im sure the are many reasons y cars vibrate and sometimes identifying the problem is a pain
 
  #3  
Old 05-24-2019, 08:02 AM
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I have not checked u joints yet, do not have lift. I put Goodyear Eagles on the car, I believe a quality tire. I recently had another corvette owner on another corvette web site also asked if they were road force balanced. I am sure they were not. I had not heard of this but I am going to check it out and see if someone locally can do it.
thankyou very much for responding
 
  #4  
Old 05-25-2019, 09:29 AM
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Might check your wheel bearings also as that can be another source of vibration. Let us know what you find out.
 

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