Scratching head on this one

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Old Nov 21, 2007 | 08:55 PM
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Default Scratching head on this one

Picked up a new/used 99 A4 today from Chicago area. While driving home in a "snow flurry" read=SNOWSTORM, the car started to exhibit bad behavior. At first it was pretty subtle, as it was windy like no other and I was getting pushed all over the road, but in retrospect, this behavior was happening. Anyway, my best description is: Cruising along at 40 mph or so, first I would hear this strange grinding, rhythmic growl, then the car would do a pretty hard lurch to the right, then left, then the noise would get louder for a second, then the back end would go back and forth, like the car was shaking its ***. Now, in a snowstorm, on questionable tires, this was somewhat unnerving. When I got home I did a quick visual, found nothing. Anyone else ever experienced this sort of behavior? Oh, and it did seem to go away once I got to dry pavement and could go 75 again
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Old Nov 22, 2007 | 05:38 AM
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Are your tires all the same size?
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Old Nov 22, 2007 | 06:19 AM
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I would guess the rear diff?
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Old Nov 22, 2007 | 05:25 PM
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Default Re: Are your tires all the same size?

Yes, they are pretty worn like 3/32 tread left, but all the same size. I haven't driven it since I got home last night. Quite frankly, kind of scared to if I am doing damage to it somehow. I also seems kinda sluggish, not like turbo cars I've driven in the past. I'll get to that next.
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Old Nov 23, 2007 | 01:21 PM
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Default Re: Scratching head can give you dandruff

2/32 tread in a snowstorm?

What kind of tires?

Ultra High performance summers?
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Old Nov 26, 2007 | 06:21 AM
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Default Re: Scratching head can give you dandruff

Yea, Dunlop D40's..now in all fairness like a dumbass I believed the weathergirl here at home before leaving to get the car. "Random flurries" turned into 3" of snow on the way back.
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