IN THE STICKS

I had a new set of goodyear f1's fitted a few weeks ago since then I have taken Scooby back 3 times to have the wheels re-balanced, and I'm still getting an annoying vibration through the steering wheel from 60mph upwards . The tyre place have been as good as gold and have even swapped the backs with the fronts ,re-balanced all of the wheels , but it's still there ,and it wasn't there before ! Has anyone else had this type of problem ? Is it common? could it be a duff tyre? or do I need to get them balanced actually on the car (if such a thing can be done ).Please ,help needed as this is spoiling my fun big time !
Thanks in advance
Dave

mart360

Dave

Just a thought?

Mark on the rim and the tyre with a bit of tipex where the balance weights are

then get them to rebalance

in theory the balance point should move with the tyre,,

however if you have a slight imbalance in the rim it will be evident as weight will need to be applied at your tippex mark on the rim

its a bit difficult to explain..

another way to check,, get them to spin the bare rim and see what the imbalance is??

And this one may seem a bit obvious but?? how much weight are they using??

i seem to remember that they can only add so much weight or a combination of weights other wise you then get a gyroscope effect

Also what valve stems are they using?? long ones short ones

More possible thoughts

hope this helps

MArt

IN THE STICKS

MArt, thanks for the reply ....I think I get what you mean! The tyre guy last night told me that one of the backs (which they put on the front now ) was out by 30g...but still it wobbles .I'm taking it back to them again tonight ,and as the bloke at the tyre place said we'll give it another go then we will start panicking !
Dave.

ragnarock2

Does it only happen when the car is pulling?

IN THE STICKS

ragnarock2
It seems to do it constantly when it's doing a certain speed (around 60-70 mph ). Though before the last re-balance it wobbled at around the 50mph mark.Just out of interest what's your thoughts on the 'does it do it when it's pulling 'theory ?
Thanks
Dave (HATE THE SITE OF TYRE CENTRES NOW !)

rb5 286

iTrader: (2)

why did they put one from the back to the front?

this would explain y the wobble is at different speeds although its usually over 70/80 that u notice the rears wobble

who is the tyre co. by the way?

IN THE STICKS

rb5 286
They swapped both backs to the front because they had re-balanced the fronts twice already, so it seemed the next step to take I presume . The company is George Tyres in Maldon , a local company who to be fair to them are being very helpful. Guess I need a big magic wand next !
Dave

IN THE STICKS

anyone else got any thoughts ? before I take it back to them tonight ?
Dave.

ragnarock2

I asked as it could be engine mounts or similar?

goonasuk

silly i know this suggestion but they are probably rotational tyres... just make sure they are rotating the right way

IN THE STICKS

goonasuk..
Sounds basic ,but I will sure check , thanks !

ZIPPY

Do you have locking wheel nuts, if so move the locking nut to the furthest most point opposite your inflation valve.

It sounds daft but it works, i had my brand new wheels and tyres fitted with no problems what so ever and then took the front wheels off to check my pads and when i put them back on i had a wobble at speed.

Moved the locking nut opposite my valve on the fronts and its now perfect.

Zippy

mik

Check that they are doing a full "dynamic balance" as opposed to a "static balance" ~ machine will do both.

Latter can give balance by adding weights to the inside rim only, but won't address any imbalance that causes a wobble (as opposed to vertical shudders). If you only have weights on the inside rims they've probably done this.

Full dynamic-balance will almost certainly lead to weights on both sides ~ inside rim and the "weights area" behind the spokes (which probably has some official name that I don't know ).

And before you ask - I have no idea why any tyre place would want to do a static balance only.....but some do

mart360

forgot to add

it may be you need to swap side to side also

and check the mating faces of the rims to disk assys

crap on there can have interesting effects


Mart

si325i

you might of warped your disks with the stopping power of the GY's.??

Si

Spoon

It's part of the latest regulations on the manufacturing of tyres.

As the speed limit is 70mph there is no need to go into wobble territory.

If you do then the design is such that you soon get fed up and slow down.

It's called government initiative.

IN THE STICKS

Been back to the tyre place ,and the tyres are on in the right direction , they balanced the fronts again with a 'fine balance',one was out by 15g (is this a lot?).So off home I set and yes you've guessed it ....I still get a wobble at around 60mph,to be true it's not as bad as it has been but it's still there. over the weekend I will try some of the things you lot have suggested (can't swop them from side to side because they are directional though)move the locking nuts around check behind the wheels etc,and if I still don't get any joy I think I'll have to take it to a local Scooby specialist,just to check nothings bent underneath (but I dont remember whacking anything !).Apart from that I'm lost !
Thanks for your help out there
Dave.

Scratch

iTrader: (1)

Had a work colleague who had this about 2.5 yrs ago and it turned out to be that one of the tyres was not actually round. Can't rememebr what brand it was, but the particular tyre fitting company sorted it out 2nd go, after rechacking the balance first time.

Mught be worth a comment to them ? or to Goodyear ?

si325i

Now come on, how the hell is the balancing going to 'cure' a tyre that isnt round??

remember the sequence...engage brain..then start typing...

Postman Pat

I had the same prob a few years back and it turned out the balancing machine was malfunctioning. Might be worth a try at another shop before you turn into Kojak.

Pat

PG

fault in the tyre tred ?

GuyM

I know youve had plenty of advice but the same happened to me through ATS. Eventually, I got no end of appologies through them because their macine was calibrated wrong.

I got shiveribg at aot 60.
They rebalalanced
I got sivering at 65
They rebalanced........ and so on and so on. a few weeks later they got it right, with a load of sorry sirs!
CHECK THEIR MACHINE, PROBABLY NEEDS CALIBRATING!!:-)

ktomassini

I had some experience with Goodyear and all I can say is "not good". Their tyres have "a habit" not to be very round

I would say you'll find a flat spot on runing surface of the tyre.

Reg, Kristijan

Leslie

Bit rude Si235i! Scratch did not suggest that balancing would cure a tyre that was not round. Maybe you should read the post before typing!

Only way to cure that is to change for a different tyre.

Les

ALi-B

iTrader: (1)

Couple of points to add

Are any of the wheels slightly bent? (caused by potholes etc.)

Had a problem with My old Rover with this, turned out the one front wheel was slightly bent on the inside - relogated it to the rear of car more or less cured the problem.

Is the tyre place balancing to 10grams or 5grams? Most places only bother doing it to 10grams, but the equipment normally can do upto 5grams.

You can try balancing the tyre to the rim. This requires equipment that supports this feature, where you run the wheel on the balancer without tyre, then run it with the tyre. Then it works out the best position for the tyre to be on the rim.

Problem could be possibly due to a hub/bearing/disc problem (very unlikely)

You try and find a garage that can balance tyre ON the car. This is the best method of balancing wheels, as it also compenstes for any irregularites with the hubs/discs as well as the wheels and tyres.

Finally it could be that the garages equipment is knackered or they are just not setting it right (offset, position of weights etc).

si325i

I know I struggle to read sometimes as it's been a long time since I was taught this particular skill, but this post does happen to suggest that on the 2nd go (of balancing that is) that they 'sorted it'. 'It' being the problem of a tyre that wasnt round.

I know most of these posts are subjective and therefore an opinion of the beholder....

but hang on..... (wait for it...I'm doing the reading thing again!!!)

The 'Only' way to cure this would be to swap the tyre!!!...but the rebalance worked!!

Sorry this is getting too deep.

Si

Eprom

Have they dialed in the correct rim wide on the machine?
Other than that i suspect you may have to try another tyre shop, looks like everything else has been covered.
Hope you get it sorted.

IN THE STICKS

Thanks for all the advice out there, think I'll try another tyre shop in the week (this seems to be the easiest step).
Dave.

Leslie

si325i

Sarcasm has got to be really clever to be effective!

Les

IN THE STICKS

Got it sorted at last!Different tyre place balanced all 4 wheels (ment having small weights on the outside rim though )and it feels OK now ,They told me a few of the wheels were out by 100g so I guess the other tyre place must have a fecked machine .I must admit I do find that I feel all the lumps and bumps in the road with these Goodyears unlike the old Bridgestones ,and yes the tyre pressures are OK ...oh well !
Thanks for all of your comments/help
Dave