"charlie" > wrote in message
...
>
> "PJ" > wrote in message
> ...
>> Alex wrote:
>>> My 94 convertable starts to vibrate around 65 mph.
>>>
>>> Feels like it is in the back of the car. Can feel it through the
>>> gear
>>> shift, so could it be drive shaft? Car is just at 100K.
>>>
>>> Recently acquired the car, first vette, so no history on the car
>>> and not
>>> sure where to start looking.
>>>
>>> Is this a common problem, or do I just go through the check the
>>> tire
>>> balance, rim straightness, etc. routine?
>>>
>>> Everything feels tight. No clunking on acceleration or
>>> deceleration, so at
>>> this point I don't suspect U-joints.
>>>
>>> Ideas anyone?
>>>
>>> Thanks!
>>>
>>> Alex
>>
>> Welcome and enjoy!
>>
>> Sixty-five is a typical speed for a C4 tire balance problem to
>> raise its ugly face.
>>
>> You 'to-do' list looks good. Add the following:
>>
>> Assuming you have the orginal factory wheels, check to see if some
>> well-meaning grease monkey rotated wheels front to rear.
>>
>> The original tire sizes were 255/45 on the front and 285/40 on the
>> rear.
>> --
>> pj
>
> if you have option z07, the tires are the same size front to back.
>
> regards,
> charlie
I thought they started to vibrate when you put them in gear? May be
why they were called "Shakers" in days gone by. ;-)