vibration up through steering wheel +80mph

[W33NOB]

Hi
Ive got high vibration through the steering wheel that sometimes shakes the car. I thought It was the wheel so I fitted a new spider, the problem is still there. It also shakes under braking but only when above 80mph. My next thought would be a warped brake disc but would that not vibrate at any speed? Your thoughts would be very helpful cheers Andy.

[Fume troll]

Wheels been balanced ?

Cheers,

FT.

[Lucozade]

tyres out of shape?

[Chewitt]

is it noisy - suspect tyre mishape (run your hands round the tyre - you'll feel it) The Goodyear F1's (chinese) on my Mondeo suffered from big tyre distortion.

just vibration and noise at that speed - wheel flat/out of balance. Someone once told me this can be common with spiders?

cv joint?

HTH

Edited by Chewitt on Tuesday 23 June 12:40

[330p4]

Andrew does it vibrate badly when braking from 70 mph if not the discs are probably OK i would get the wheels balanced.Look on the inner & outer rims you should see a mark if the balancing weights have come off
Ian

[drivingfroggy]

My current car does it as well. But it's only really noticeable at speed. I blame the discs and/or pads.

[W33 NOB]

Tvr power fitted the new spider and balanced the wheel so Im sure its not the alloy/tyre. How easy is it to change the brake disc and is it worth doing the bearing at the same time?

[Fume troll]

W33 NOB said:

Tvr power fitted the new spider and balanced the wheel so Im sure its not the alloy/tyre.

Might not be that one. Perhaps one of the wee weights has come off, you might see a mark where it was.

Cheers,

FT.

[Noisy]

If the old tyre was fitted to the new wheel it will have worn to the shape of the old wheel, once it wears to the new wheel it will need rebalancing, specially if the old wheel was a long way out. Its normal for tyres to need a balance again after they have worn in.

Make sure you get all 4 balanced as a rear can transmit vibrations through the car but you notice on the steering.

[Whitey]

It's also very easy to not correctly balance a wheel.

[Noisy]

Well wheel balancing is very straight forward, but some people are just too lazy to do it properly. It does make me laugh though when people spend a fortune on getting new tyres and wheels balanced with a super accurate
machine, soon as you drive down the road and wear the tyres a little they will be out again. Any tyre centre should be able to get wheels balanced properly if they have a half decent machine.