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steering wheel vibration

E

ever88

New member
had wheels balanced, then with new tyres and wheel bearings changed but wheel vibrates and spoling drive

can feel it come it at around 50 mph but worse at higher speeds

when I swerve from side to side during my diagnosing, the vibrating is very evident through wheel

fronts defo not buckled

this is my 3rd 944 T with similar issues.

what on earth is worng with these cars?

someone please assist me sorting this as I'm close to tears with it

I see them racing at tracks and think they must be a sorted car of choice but this issue spoils driving it
 
Go back to whoever balanced em! [;)]

I get a very slight vibration at my wheel at about 50 mph but only seems to happen when I first set off and tyres are cold. Bizarre!
 
went to two different place for balance.

first balance then 2nd place balance with new tyres

same result!
 
Never had any vibration issues with either of my Turbos so perplexed as to why you should have had three like it. Sorry not an answer as to how to cure it I know - am with Andy on this sounds like its something those who are supposedly doing the balancing are doing wrong.
 
If it continues to get worse with speed, I'd be looking at wheel alignment and steering ball joints/ wishbones etc.
 
I'm struggling with a similar thing. I've had my car on 2 different sets of wheels and tyres up to this year and no problems.One set an ebay purchase and just bunged on.

Had one set of wheels refurbished by a very well known group here in Swindon and 4 new Toyo T1rs (supplied by me). At the 3rd attempt they felt it was wheel bearings not the balancing.
So I had another well known garage close to me rebalance them and whilst they are much better there is still noticable wobble but it is usuable.
I'm convinced it is the balancing as I've not had it before but I wish it wasn't quite this complicated. When the car is serviced I shall have another go.

To the OP find somewhere that will balance them on the wheel stud holes not the centre hole as that can make a difference I gather. Having said that in 20 years of buying tyres they have all been balanced on the centre hole and been absolutely fine.
 
It is definitely not inherent to the design of the car. Mine had a slight wheel wobble when I got it, around the higher reaches of motorway speeds, but I had the wheels balanced while it was in for service at Promax and it's fine now.

If you are convinced that the wheels are perfectly balanced, and in true (i.e. not buckled in any way) then Iwould look to front suspension bushing and ball joints.

 
Is it possible for one of the discs to be out of balance ? I always understood them to be balanced in the factory, but wonder if a duff one could cause this...... Do you know when they were changed, and if so what for ?
 
...or disc to be warped? I know that should show under braking but you never know.

Are you still selling your Turbo?
 
Funnily enough in a similar situation myself, after wheels check everything working back up through the car but a steering shaft UJ is whilst not a common problem is commingly replaced on these cars. In my particular car its only the steering wheel that shimmies not the car itself.
 
Actually that leads me to another thought: even disregarding locking wheel nuts (good thought by 944 gm) , are you sure all your other wheel nuts are the proper light alloy ones? If one or more are steel, that would throw things out.
 
Anorak on !! orignalalloy nuts weigh 18 grammes, as do the alloy Porsche locking ones, i have binned alloy locknuts as they are a major job to get should you lose the key, ask me how i know[:mad:]
Cars are never left anywhere for the scumbags of society to take a fancy to them.

Sticking pads in the calipers and take a good look at balljoints and bushes it should not be doing "vibration" i had a couple of sticking pistonson the fron brake calipers which made it virtually undriveable due to serious judder.
HTH Jim.
 
Jim is that the locking ones with keys and the barrel that slides out or the locking ones with the matching socket type nut that you remove when tight?
Tony
 
anyone live near me in richmond north yorkshire?

perhaps swap wheels and see if different.

currently looking at possibly exchanging wheels to cure issue. not sure of the offset I require on an 86 T
 
I've had sticking brake pistons , rule them out first.... the sliding body mechanisn gets stuck as well - leaving a pad on the disc.....


 
I had a similar issue last year but had a (rear!!) wheel bearing changed and it improved, then had my wheels re-balanced and it went away completely. The Vibe came on quite suddenly, so could just be co-incidental with the wheel/tyre swap
 
This shouldnt be a problem if the suspension and sterring is all ok and wheels are balanced properly and to have had the same issue on three cars is very very unusual to say the least. Do you use the same company all the time?

I have heard from reliable sources that if you have alloy nuts and a steel locking nut then even though it is close to the centrifugal centre mass try positioning the locking nut directly opposite the tyre valve.
 
Tony, they were the socket type, not key and barrel, the type fitted to mine have a shear point machined into them by Porsche to stop people trying to remove them by knocking a smaller socket on etc.
My local OPC has kit for machining them off, not seen it personally but a matey has.
As an aside i always use a "soft socket" on mine to avoid damaging the shoulders.
 
1st car had significant wheel balance issues with Fusch alloy ims on it

second car was not bad in truth

current car started off life OK not perfect but has got worse. it is in for an oil and filter service next wek and my garage chap is going to look at it. He drove the car and felt it through wheel also but seems to also think anything through the wheel has to be a balance issue.

He is going to check joints next week as my visit today was not planned so I will report findings back.

I hope I can resolve it as the car is a stunner in all other departments.
 
Go with what with has been said on here, get it sorted and enjoy, my 220 was horrible to drive with sticking front brake pistons, major vibration...........AARGH !
 
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