Omega Owners Forum - Part worn tyres

o-meg-a

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Re: Part worn tyres
Reply #60 - 12. Apr 2011 at 15:12

Andy B wrote on 12. Apr 2011 at 09:31:

Marks DTM Calib wrote on 12. Apr 2011 at 09:28:

Some intersting and well considered advice here:

http://www.rospa.com/roadsafety/adviceandinformation/vehiclesafety/tyresafety/ty...

The tyre industry continues to express concern about the sale and use of part worn tyres

about says it all! Roll Eyes

if you mean because it coss them money!

And those tyres have already been through a fit for purpose test when they were new.

If you are indeed proposing some kind of test, then maybe you should make every driver have their wheels tested every 6months as a precaution. because technically, any tyre becomes a part worn once its been used on the same car for several thousand miles........It's the same thing.

Every car is on part-worn tyres.......because tyres are a consumable item.
They wear down,
They are replaced.

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Kevin Wood

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Re: Part worn tyres
Reply #61 - 12. Apr 2011 at 15:13

aaronjb wrote on 12. Apr 2011 at 14:27:

Kevin Wood wrote on 12. Apr 2011 at 14:24:

TheBoy wrote on 12. Apr 2011 at 12:40:

New tyre is 9mm normally, tyre worn out at 2mm, nobody takes down to legal limit surely

Nope, just down ~~through~~ ~~below~~ ~~under~~ oh, sod it. Roll Eyes

They're only worn out when ~~the canvas is showing~~ they're ~~deflating~~ just starting to get "interesting".

Fixed.

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o-meg-a

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Re: Part worn tyres
Reply #62 - 12. Apr 2011 at 15:18

yes i take my tyres to the limit.....but no further,
and if its winter i'll change hem slightly earlier becuase although i am aware, and take account for the change in handle characteristics as the tyre wears, a tyre at 1.6mm is much less effective in the wet.

The legal depth is 1.6mm.....so no reason why people would not take it to that.

In fact.....i see literally 10 or more cars a day....with less than 1.6mm of tred on, which i dont condone, but hey ho, what you gonna do.

I've been in the position before where i couldnt afford even part worns, but still had to drive to work.
I'm not proud of it, but i did what i had to and no one got hurt.

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« Last Edit: 12. Apr 2011 at 15:19 by o-meg-a »

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Kevin Wood

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Re: Part worn tyres
Reply #63 - 12. Apr 2011 at 15:31

o-meg-a wrote on 12. Apr 2011 at 15:18:

yes i take my tyres to the limit.....but no further,
and if its winter i'll change hem slightly earlier becuase although i am aware, and take account for the change in handle characteristics as the tyre wears, a tyre at 1.6mm is much less effective in the wet.

The legal depth is 1.6mm.....so no reason why people would not take it to that.

In fact.....i see literally 10 or more cars a day....with less than 1.6mm of tred on, which i dont condone, but hey ho, what you gonna do.

I've been in the position before where i couldnt afford even part worns, but still had to drive to work.
I'm not proud of it, but i did what i had to and no one got hurt.

I count myself lucky if an Omega tyre gets down to the limit across the whole tread before one of the shoulders is down to fabric. Grin

In seriousness, yes, 1.6mm is about sensible. I find a tyre is still performing well enough in the dry at that level but starting to get a bit dicy in the wet and it's not something I'd want to run around on in the winter.

Kevin

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bigegg

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Re: Part worn tyres
Reply #64 - 12. Apr 2011 at 15:55

Marks DTM Calib wrote on 12. Apr 2011 at 10:26:

if I was buying somehting as important as a tyre and it had a high probability of coming from a vehicle that had been invovled in an accident, I would want a basic test done before it was mounted on my car. Thumbs Up!

what sort of test would you suggest?

I, personally, buy from a part-worn supplier who I trust, having dealt with him for 15 years.
He checks his tyres visually on receipt and I insist on having them pressured to 60psi on fitting, then deflated to correct pressure before installing on the car.

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« Last Edit: 12. Apr 2011 at 15:57 by bigegg »

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Marks DTM Calib Administrator Offline Ex Member Posts: 25671 Northern Hemisphere Gender: Drives: Astra J, Mum Bus, Dexta Tractor, 108 DMU wip	Re: Part worn tyres Reply #65 - 12. Apr 2011 at 16:05 The standard test used on new tyres e.g. an inflated, loaded and at speed run test (they have auto rigs to do it).
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bigegg Intermediate Member Offline Posts: 449 Leeds Gender: Drives: '98 mv6 estate manual, 2.5di Transit Rustbucket	Re: Part worn tyres Reply #66 - 12. Apr 2011 at 16:10 by the time that's been done on every part worn tyre, there would be no point in buying them. I assume that not every new tyre is tested in this way? Just a sample of each batch? I think I'll take my chances
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Marks DTM Calib Administrator Offline Ex Member Posts: 25671 Northern Hemisphere Gender: Drives: Astra J, Mum Bus, Dexta Tractor, 108 DMU wip	Re: Part worn tyres Reply #67 - 12. Apr 2011 at 16:48 bigegg wrote on 12. Apr 2011 at 16:10: by the time that's been done on every part worn tyre, there would be no point in buying them. I assume that not every new tyre is tested in this way? Just a sample of each batch? I think I'll take my chances No, all new tyres are tested that way. Its not a long test.
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Marks DTM Calib Administrator Offline Ex Member Posts: 25671 Northern Hemisphere Gender: Drives: Astra J, Mum Bus, Dexta Tractor, 108 DMU wip	Re: Part worn tyres Reply #68 - 12. Apr 2011 at 16:51 Further info here: http://www.tyrereviews.co.uk/Article/Part-Worn-Tyres.htm# Just remember, I am saying that I would buy part worn tyres if I could see some evidence that they had passed a basic test to prove they are not damaged as a result of thier previous life.
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bigegg

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Re: Part worn tyres
Reply #69 - 12. Apr 2011 at 17:11

that's fair enough :.)

I just can't see it being economically viable, tho.

Fit a tyre to a wheel.
run test
remove tyre again

gonna take, what? 15 minutes per tyre?

that's going to add at least 10 quid to the price, not even taking into account the capital expense of the testing machine itself.

Worthwhile in the case of a big, heavy, fast car like an omega, I suppose - I think I'd take have them tested if it was available, certainly for the front tyres

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bigegg Intermediate Member Offline Posts: 449 Leeds Gender: Drives: '98 mv6 estate manual, 2.5di Transit Rustbucket	Re: Part worn tyres Reply #70 - 12. Apr 2011 at 17:16 it would be interesting to see a test of some tyres to see how many already fitted to cars would fail. By which I mean tyres which were fitted to the car new, and run on the car, without "accident" for say, six months?
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hotel21

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Re: Part worn tyres
Reply #71 - 12. Apr 2011 at 17:24

bigegg wrote on 12. Apr 2011 at 16:10:

by the time that's been done on *every* part worn tyre, there would be no point in buying them.

I assume that not every new tyre is tested in this way? Just a sample of each batch?

I think I'll take my chances

All new tyres are tested individually. Its an automated, high speed, rig with no manual input other than as an overseer. Test takes literally seconds per tyre and it is how tyres are graded for OE and aftermarket and/or discarded for out of balance.

The tyre you buy at an aftermarket outlet, despite it being of an identical make/size etc etc, is a 'second line' item and not first quality. They are reserved for the car manufacturers.

Look at a brand new wheel/tyre on a car in the showroom. The balance weights used are minimal, sometimes if any, in comparison to an aftermarket fitment, even when the aftermarket one is correctly fitted and located on the rim as per the light/heavy dots on the sidewall. Wink

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bigegg Intermediate Member Offline Posts: 449 Leeds Gender: Drives: '98 mv6 estate manual, 2.5di Transit Rustbucket	Re: Part worn tyres Reply #72 - 12. Apr 2011 at 17:53 How much would a machine to test part worn tyres cost tho? Beyond the budget of a one-man-band tyre part-worn tyre fitting shop, I'm guessing? Something that only a company like kwak-fit could afford? I can imagine how that would end up...
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TheBoy

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Re: Part worn tyres
Reply #73 - 12. Apr 2011 at 21:10

bigegg wrote on 12. Apr 2011 at 17:11:

that's fair enough :.)

I just can't see it being economically viable, tho.

Fit a tyre to a wheel.
run test
remove tyre again

gonna take, what? 15 minutes per tyre?

that's going to add at least 10 quid to the price, not even taking into account the capital expense of the testing machine itself.

Worthwhile in the case of a big, heavy, fast car like an omega, I suppose - I think I'd take have them tested if it was available, certainly for the front tyres

Probably a lot more, as, if MDTM is correct about written off cars, they have to lose the cost of the tyres that fail that would otherwise be offloaded onto unsuspecting Joe Blogs

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Bixy1 Intermediate Member Offline Dragged through MOT kicking and screaming. Posts: 308 Leeds. West Yorks. Gender: Drives: Astra in storage, using Miggy! http://sbpra.com/derektmorgan	Re: Part worn tyres Reply #74 - 12. Apr 2011 at 21:23 Mmmm! First place I look in for a new tyre is the scrapyard. They have to be looked over carefully of course but I've never had a problem.
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