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Steering wheel judder on braking...?

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Old Jun 5, 2003 | 06:52 PM
  #1  
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From: Bournemouth - 5x Ex Impreza owner. 997 GT3 CS.
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If I brake over 50 mph, I get judder through the steering wheel. Also noticed when on a straight road, the steering wheel is facing about 10 degrees to the right. I get a droning under hard braking, which sounds like maybe a disc is warped? I plan on getting new ones anyway, so not a problem.

Is this just bad alignment?

Sounds fine when cornering, from a CV / beairing point of view.

Any ideas?

MB
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Old Jun 5, 2003 | 06:54 PM
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From: Deepest Darkest Dorset!!
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I dunno eh, some people have a car for five bloomin minutes and they start wrecking it, sounds like you've used them a tad hard mate!!
Mind you, the drone could just be the pads, but the vibration sounds like the start of a warp!!
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Old Jun 5, 2003 | 07:03 PM
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Any black marks smeared across the discs ?

Christchurch Tyre Company have a very nice wheel alignment machine, a lot closer than Micheldever.

Also have on-car balancing.
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Old Jun 5, 2003 | 07:26 PM
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From: Deepest Darkest Dorset!!
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yeh Goon, they did my alignment last time, but didn't want to give me max neggy camber, still felt better when I left them though!
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Old Jun 5, 2003 | 09:28 PM
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with the wheel offset & the vibration thro' the steering wheel sounds more like you've got a wheel balancing issue ..... poss. caused by losing a weight when you've hit a pot hole and knocked the alignment out???
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Old Jun 5, 2003 | 09:35 PM
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From: Deepest Darkest Dorset!!
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Sound to me like you need the 16's that are sat in my garage mark, go on, you know you want-em!
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Old Jun 6, 2003 | 11:03 AM
  #7  
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From: Bournemouth - 5x Ex Impreza owner. 997 GT3 CS.
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Thanks all,

Stockcar, I only picked it up the other day and found it handles better than my previous MY99. I was a bit enthusiastic on a 60mph roundabout, and contacted the front wheel I turned it in sharp and it responded a bit too well. Feels like it has a quick rack!

Balance weights are on the outside on the wheels on this car, so may have popped one off.

Ron, need 17's but if I get desparate, ill put in an offer

Goon, was going to try the XChurch place, bit pricey tho.
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Old Jun 6, 2003 | 11:04 AM
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From: Bournemouth - 5x Ex Impreza owner. 997 GT3 CS.
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Oh, and I did punish the brakes big time, but haven't checked them yet...

MB
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Old Jun 6, 2003 | 12:46 PM
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If the vibration is only under braking its unlikely to be wheel balance - that's normally just dependent on road speed. It's less likely to be a warped disc and more likely to be uneven build-up of pad material on the discs (hence the question about black smears). I had this problem recently, and if you do a search on shudder or judder you should find a few posts with some solutions ranging from bedding them in again to actually having the discs reground... There's a very good link somewhere to a site which explains this all very clearly...
The steering wheel offset is a tracking issue , and could just mean that although the tracking is fine, the left and right track rods aren't adjusted the same - you need to have them adjusted by then same (opposite) amounts to pull the steering wheel straight when the wheels are pointed dead ahead.
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Old Jun 6, 2003 | 03:21 PM
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From: Bournemouth - 5x Ex Impreza owner. 997 GT3 CS.
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Cheers Mungo,

Think I might have twatted a wheel. I will get it checked next week and tell you all how I got on.

MB
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Old Jun 8, 2003 | 12:44 PM
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Had the same problem and it was the pads.. I had EBC greens and apparantly the pad material used on them coats the discs and the pads don't bite but "flutter" is the best description I can come up with. Change to different type of pad and ok now...
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