Wonky wheel!

[Goblinslayer]

Hi All,
I bought 4 new tyres last week and been having a mare of a time trying to stop the vibration.
I took them back to the shop today and had them checked, but we couldn't get one of them to balance at all.
We would balance it, then rotate it on the balancer and it would be out again, so I'm thinking that the hole in the middle is wonky..?

Has anyone seen this sort of thing before????

Or does anyone have any spare OEM wheels anywhere near Port Talbot I could borrow to try or possibly buy??

It's driving me bonkers! :annoyed:

[barryjdart]

Have you got the spigot rings fitted?

[Goblinslayer]

Errrm what's a spigot ring?

Ok looked it up, how do I tell if it's there? and if not what one do I need?






Have you got the spigot rings fitted?

[VIDAL BABBOON]

Its a metal or plastic ring that fits onto the centre part of the hub and it centres the wheel correctly.

It shouldn't affect the balancing side of things though :no:

If the wheel is on the machine correctly then it wont matter :no:

They cant be balancing it right or have not got the tyre seated right on the rim.

If you spin it up on the machine and then weight it correctly it will spin up again true :nod:

[Smoothound]

I had this with my 200. Spigots make no difference as the balancer has an adjustable fit. :no:

I just got them to keep trying, eventually it settled down and they balanced the tyres OK, took 3 or 4 goes (on 2 machines). This happened on every occasion I fitted new tyres. On close inspection of the wheels, there was about 2-3mm runout on the wheels. Not a buckle as such, but maybe enough to confuse the balancer. Once they were balanced there was no vibration at all :)

[Goblinslayer]

It appears I have no spigot rings.
It also appears I can influence how much vibration I get by adding locking wheel nuts to various studs, I guess it effects the balance ever so slightly. (normally I don't put them on).

I shall procure spigot rings anyway and have another go.

[VIDAL BABBOON]

If the wheel is not balanced on the rig before fitting to the car then it will wobble no mater what you do :nod:

[Goblinslayer]

I see from the interwebs that Sinclairs on Fabian Way has a Hunter balancing machine.
I shall take the offending wheel there and have them do it, otherwise bak to my original idea and buy a new wheel.

[Smoothound]

It appears I have no spigot rings.
It also appears I can influence how much vibration I get by adding locking wheel nuts to various studs, I guess it effects the balance ever so slightly. (normally I don't put them on).

I shall procure spigot rings anyway and have another go.

If you've got tapered nuts then a spigot ring doesn't really matter as the wheel will centralise when you do it up. Just be sure to tighten up nuts opposite each other rather than rotationally (if you get what I mean)

The fact that moving the nuts around affects the balance suggests your wheel is particularly sensitive to balance - could be a similar issue to mine, check for runout - fix is to just keep rebalancing till it's right :thumbs:

[Goblinslayer]

Well, had it rebalanced on the way home, and rotated on the wheel etc.
Still got the same vibration.
Beginning to think it's not the wheels....

[VIDAL BABBOON]

So the wheel has been properly balanced now ?

And the vibration is still occurring?

If so i would be looking at wheel bearings, jack the car up and check for play by gripping the wheel and moving in various directions.

[Tech]

Not had any incidents involving kerbs?

What speeds are you getting the vibrations?

[Goblinslayer]

No Kerbs or anything.

Vibration starts after 60mph.

Can feel it in the body then through the steering wheel.

Comes and goes as I think the wheels sync up.. i.e. going round a bend it will dissapear, then go around the other bend it'll reappear.

I'm assuming balanced, I had the guy do it carefully, and fair do's he took it off the rim and reseated it in case.

But still same vibration. :confused:

I think I'll try swapping the wheels around tomorrow and see if it makes a difference....

One thing the tyre guy noticed was the brake disk was marked oddly, like the outer 1/2 of the disk where the pad is was really roughly scored.. do you think that may be a problem...?

[VIDAL BABBOON]

Could be binding calipers :nod:

Would explain uneven wear on the disk :nod:

Sticky pistons are not uncommon on older cars,a rebuild thread is in the FAQ's at the top of tech s14

[Goblinslayer]

Right I shall print it out and have a go tomorrow.

Be prepared for the "Help I've buggered my brakes and can't put them back together again" thread :eek:

My sig, is not a joke :rolleyes:

[VIDAL BABBOON]

LOL

Check for uneven pad wear and this will indicate a problem :nod:

You dont have to remove the piston to see there is an issue, if you have a dodgy piston it's cheaper in the long run to just buy new :nod:

www.brakeparts.co.uk

They will have everything required to completely rebuild a caliper from scratch.

[Rhys_sx]

i have this problem all the time in work with cheap tyres these days . tyre willl balance up but shudder. run your hand over the tread fell for lifting and movement in the tread . Also if possible rotate the wheels and c if the vibration moves to the back .

[Goblinslayer]

AHA!

Ok spent the morning moving wheels around and seem to have stopped the vibration.

However...

When it's jacked up and I spin the some of the wheels around, I can hear the brakes rubbing on the discs, grind... grind.... etc.

Is this normal?

Also I still have the rather oddly scored disk on the back, the innner 1/2 is smooth and the outer 1/2 is quite rough....

I'm a bit loathe to take it all apart now the vibration seems to have gone :indiff: