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[Ian_Fearn]

I fitted a set of Linglong ditch finders  . In all fairness the grip is seemingly good, very surprising in fact even in the wet. At £60 a corner they were all I wanted to spend on it at the moment. Assuming the vibration isn't tyre related I would recommend these Linglongs.

Thanks for that WIM. I dont think theres much doubt, its coming through the seats. I checked the prop bearing was ok last night.

[chrisgixer]

I fitted a set of Linglong ditch finders  . In all fairness the grip is seemingly good, very surprising in fact even in the wet. At £60 a corner they were all I wanted to spend on it at the moment. Assuming the vibration isn't tyre related I would recommend these Linglongs.

Thanks for that WIM. I dont think theres much doubt, its coming through the seats. I checked the prop bearing was ok last night.

No. It's not really. Is it!

They are shocking in the wet. Especially given the reasonable dry grip.

[Ian_Fearn]

Well, I changed the rear track rods tonight. Obviously they've not been set up at all, just fitted. A quick drive shows exactly the same symptoms which is leading me down the route of tyres and wheel balancing as i'd have expected some change if this was the cause.

I'll get it tracked over the weekend and get wheel balance checked again. If that doesn't solve it, i'll swap the wheels front the back and see what happens then.

I suppose if I could find another set of wheels to try that could be the decider.

[chrisgixer]

The vibration started after Linglongs fitted, going by what you said, so its simply a case of wheel balance IMO. You need to take it back and get them to correct the fault they introduced.

Never, has geometric set up fixed a vibration.

Tyres or wheel related.

But as you say it makes sense to fit the rear track rods and get them to do both on return. Maybe the tyre isn't seated correctly on the bead.

[Ian_Fearn]

Sorry to drag this back up but I guess it could guide people for the future.

I've put up with the awful vibration for weeks and then I saw a set of nearly new Michelin Alpin winter tyres on a set of 15 inch steels. SO, I swapped the full set over and guess what.... Vibration completely gone.

Tonight, I've substituted all the tyres back one by one and found a single offending wheel. I can't see anything obviously wrong. Does anybody know if its common for one of these wheels to get buckled?

[Andy B]

.....
Does anybody know if its common for one of these wheels to get buckled?

Which rims? The only rims that seem to easily buckle are the two colour prefacelift MV6 rims

[Ian_Fearn]

The sort in this for sale ad.

http://www.vauxhallownersnetwork.co.uk/index.php?threads/facelift-omega-3-0-v6-elite-2001.189183/

[Andy B]

The sort in this for sale ad.

http://www.vauxhallownersnetwork.co.uk/index.php?threads/facelift-omega-3-0-v6-elite-2001.189183/

I had a set of those on my MFL with no problems at all ..... I think you've just been unlucky 

[chrisgixer]

Best way to spot a wheel fault is to mount it on the front and spin the wheel by hand while watching the rim for a buckle, dings, bends or anything that's not perfectly round.