Faulty Hankook tyres?

[runs4miles]

Just had two new front Hankook K110 Evo tyres fitted at performance tyres.

Car was running perfectly until tyres were fitted, but now have a wobble/vibration in the steering at 70mph.

Took the car back to the garage and they re-balanced the wheels but wobble was just as bad.

They told me it could be a 'Heavy Tyre', or a 'bad Wheel tyre combination', or impacted Ice on the tyre or a damaged wheel.

They changed the tyres onto the rear wheels and re-balanced all four again but problem still exists.

I feel the tyres are faulty as the car was absolutely fine before the tyres went on.

They told me that one of my rear tyres had a 'kink in it' which was now fixed!

They also told me that the rear tyres could cause a wobble in the steering wheel which I find hard to believe.

I know nonsense when I hear it!!!! The problem still persists!

[david.aka.judas]

i had almost the same when I fitted toyo's to my dti, it turned out that it wasn't the tyres, it was the tyres highlighting the problems with the car.

it turned out that I needed new rear control arms and track rod arms.

[Exclusive BV]

Get them balanced somewhere else mate before you try anything else.

it's not uncommon for a balancing machine to go out of Calibration.

I remember the same happening to me at KF years ago, they swore blind the tyres were 0-0 but the car but almost undriveable. turned out the machine was well out

[m8internet]

If the tyres have been replaced again, then the issue resides with one or more of the wheels

Given the amount of ice and hidden potholes in the Glasgow area now, it is very possible the tyre or wheel is indeed damaged and/or the balance is out again

Personally, I would leave it until the next thaw

I have a vibration at the moment
I suspect this was caused by putting the car into a seven foot snow drift (rather than hit yet another car)
The car then had to be dug out, so no doubt the weights have come off one or both front wheels

Equally, I would be suspicious over the report of a "tyre kink"
This may deem the tyre unroadworthy and should have been shown to you

[lee gsi]

A wheel can be balanced but maybe buckled

[m8internet]

A wheel can be balanced but maybe buckled

Any competent tyre fitter should be able to spot that, unless it is very subtle, which seems to be the case on Vectra alloys

[runs4miles]

they havn't replaced the tyres yet and doubt that they will as they seem keen to come up with a variety of excuses. The car was perfect before the tyres were fitted, and has not hit any pot holes or anything. The previous front tyres were vredestein ultrac worn down to 3.5 mm and had no grip in the bad conditions.
The hankooks are gripping better but the shimmy in the steering is bad.
They seem keen to blame the car rather than replace the tyres.
If the wheels were kinked or any suspension faults, then it would have shown up before the new tyres went on.
one wheel showed 140 on the machine so he put the tyre onto a wheel from the rear, however made no difference to the shimmy.

[david.aka.judas]

If the wheels were kinked or any suspension faults, then it would have shown up before the new tyres went on.

I never noticed it before the new tyres. - that why I actually sent the tyres back to toyo to be tested.

[Exclusive BV]

Can the op confirm that the tyres were balanced both times on the same machine?

[runs4miles]

Yep, tyres were balanced both times on the same machine.
I would not advise anyone to use 'Performance Tyres', Glasgow, as I found the service was hostile, no apologies and felt I was an inconvenience to them having just paid £200 for two tyres.
Either tyres are fitted badly or the Hankook K110's are complete rubbish!