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RE: bearings or bad tire?

     Not sure if this is the same problem, but when I had new tires 
     installed on my urQ I had to go back 3 times to get them balanced 
     properly.  It turns out the car is extremely sensitive to balance
     they had to set their machine to its most sensitive position.  

______________________________ Reply Separator
Subject: Re: bearings or bad tire?
Author:  "Gabor Horvath" [SMTP:horvathg@apacs.pote.hu] at NA-Exch1
Date:    3/15/98 11:20 PM

I have the same symptoms on my 85 q Coupe. I had it with the previous
set of 
wheels, too. Still couldn't cure it and would be greatful if anyone
suggest a good move.
Regards from Gabor 85qcoupe
Eric Billing wrote:
> Greetings,
> I recently put new Potenza RE930 (with allignment) on our '93 100
CSQW. The 
> car rides real well and is considerably more comfortable to drive than
> before--the Pirellis were well worn and we were out of balance. 
> Bad news, is that while the new tires and allignment make things
> considerably quieter, I have discovered a "throbbing" vibration which
> at about 65mph (which is 2800RPM in 4th on the auto-tranny).
> Some additional diagnostics:
> a) 2800rpm in 3rd (about 50mph) has similar noise but much less
> and a different frequency.
> b) below 65 (say 60 mph) there is no noticable noise. Above 65, the
> road noise drowns out the throb...
> c) 65 mph in 3rd (about 4000 rpm) results in too much engine noise, so
> may not be present
> d) no shake in the steering wheel
> So, I'd be interested in hearing suggested courses of finding the
source of 
> the problem. Currently the car is back at the tire shop having the
> re-balanced and rotated. Hopefully the noise will go away or move in
> as to indicate a tire defect.
> Other ideas?
> Thanks,
> Eric
> --
> Eric Billing
> Eagan, MN
> '93 100 CSQW Pearl w/ 57K miles
> '91 Accord EX w/ 115K miles
> eric.billing@metaphasetech.com