Front-end vibration?

[amalventano at sc.rr.com (Allyn)]

some stuff to check (as i've been in a continuous battle with the riegers 
front end for a year now):

- tires out of round? (possible if its been sitting for a while, especially 
if the air was low during that period).
- wheels - hubcentric? (if you have spacers for hubcentricity, do they fit 
VERY snug?)
- wheels - out of round? (can spin on a spare rear axle to examine - if 
you've got one lying about)
- bent hub? (same as above for result)
- wheels - out of balance? (pretty much a tire shop issue there, unless you 
want to vacuum-drag some of that balance compound that they use on trucks 
into there)
- inner cv's? can cause a sideways shudder type of feel that seems to come 
from the engine mounts. usually more pronounced when accelerating hard (but 
not necessarily, depending on how the joint is failing).
- tie rods are a possibility, but you would likely feel the vibration in the 
wheel, and realize tie rods will only amplify a vibration thats already 
there (so you still have to find the root cause).

hth
Al

----- Original Message ----- 
From: "Jim Jarrett" <jarrett@rpa.net>
To: <scirocco-l@scirocco.org>
Sent: Tuesday, May 18, 2004 8:55 AM
Subject: Front-end vibration?


>
> Took the convertible out for a little run last night and I noticed
> a very pronounced vibration over 70mph, up to about 85. (I didn't go over 
> 85).
>
> It seems like there is some small vibration around 60-65, and it gets bad 
> at 70-75.
>
> And YES, I DID take the car that fast.  Bite me ;)
>
> I just replaced the suspension with an H&R coilover kit, and had the car 
> re-aligned.
>
> I'm thinking it's something still with the alignment, or a tire balance 
> issue.
> Thing is, I had the tires balanced last year.
>
> So before I have it checked for things I can't check (alignment/tires), 
> any
> suggestions of things I CAN check?  And how?
>
> TIA.
>
> /===============================================================\\
> | Jim Jarrett,Rochester NY       93 Passat GLX,     84 Scirocco |
> | mailto:jarrett@rpa.net         81 Rabbit Convertible 16v      |
> |                                                               |
> |    Any problem can be solved with the proper application of   |
> |   Force, Heat, Chemicals, or Money.                           |
> \\==============================================================/
>
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