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Spongebob
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Posted: Tue Feb 16th, 2010 07:12 pm |
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I would take a tyre incorrectly seated on the rim as being along the lines of numpty fits tyre, blows it up to 30psi, inner bead fails to pop onto rim correctly resulting tyre only partially seated.
I dare say anyone daft enough to fit a tyre so narrow that it looks like that on the polo is going to be changing it pretty soon as the stresses on the internal structure (plus driving style of said pillock) will in all likelihood result in it going out of shape very quickly (I had a colleague who fitted 165/13's onto a set of 6 inch wide pepperpot rims and changed 2 tyres with bulged treads)
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golf
Trade Member
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Posted: Tue Feb 16th, 2010 07:10 pm |
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it was quite funny to be honest,
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KevG
Super Moderator
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Posted: Fri Feb 12th, 2010 09:32 pm |
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I wish I could have been a fly on the wall at that one!
Kev
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golf
Trade Member
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Posted: Fri Feb 12th, 2010 01:01 am |
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i had a long discussion with my AE today about wheels being out of the srches and we have not been able to fine it anywhere as a fail, i could see no saftery problem with this polo int the picture with regauds to tyres.
i would pass in my opinion
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greasemonkey1978
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Posted: Tue Feb 9th, 2010 09:57 pm |
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Thanks for the info so far guys, this gives me a few points to take back to my student and also to raise with the rest of the class.
Again if there are any further points any one has or any more clarifications on the laws and MOT side with regards to tyre stretching I would be pleased to hear them.
Thanks.
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Spunkymonkey
Member
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Posted: Tue Feb 9th, 2010 08:49 pm |
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There were a couple of quite long running threads anout this on pistonheads and UKPoliceonline.
Neither seemed to come up with a definitive answer, probably because it's such an insane idea that the law hasn't addressed it yet. For anyone who's unsure what it involves, this is an example posted on Pistonheads:
If anything, it would probably fall foul of the Construction and Use Regulations 1986, Section 27(1)(a) which states:
27
(1) Save as provided in paragraphs (2), (3) and (4), a wheeled motor vehicle or trailer a wheel of which
is fitted with a pneumatic tyre shall not be used on a road, if--
(a) the tyre is unsuitable having regard to the use to which the motor vehicle or trailer is being put or
to the types of tyres fitted to its other wheels;
because tyre manufacturers specify what rim widths are appropriate for each tyre they manufacture and warn that these must be followed for safety. For example, Toyo warn that:
Serious personal injury or death can result from failure to select the proper tire and rim: Tire MUST match the width and diameter requirements of the rim.
And Dunlop say:
Correct rim width ensures flex at the designed flex point in a tire sidewall for optimum tire performance.
If the rim is too wide, the flex point moves towards the rim area, causing heat buildup in the lower sidewall, which reduces tire life and could result in failure. Either too narrow or too wide of a rim can result in uneven tread/pavement contact pressure causing uneven wear and potentially reduced traction, or increased vulnerability to bead dis-lodgement.
So, the manufacturers say that fitting a narrow tyre to a wide rim is an unsuitable fitment (and dangerous), which would therefore be covered by the C&U regs above.
Probably not an MOT issue as long as they've seated properly (which, assuming tubeless, they'd kind of have to if they stay up!) but that's not much comfort when your car's going sideways down the road into a bus-stop because a sidewall's failed 
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KevG
Super Moderator
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Posted: Tue Feb 9th, 2010 08:03 pm |
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Hi Golf.
Where in the manual does it say "wheels cannot be outside the wheel arch"?
Kev
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golf
Trade Member
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Posted: Tue Feb 9th, 2010 07:19 pm |
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wheels cannot be outside the wheel arch, obviously the mot rules which you have a link too are all there
if it will fail an mot then it is not legel.
also the law would provide you with a pg9 and 3 poiints and a £60 fine for each defective tyre. probably send you to court if they suspected that you knowingly done this
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greasemonkey1978
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Posted: Tue Feb 9th, 2010 04:36 pm |
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Bones n Hombre wrote: Reason for rejection 4.1 1d
"Tyre incorrectly seated on the wheel rim"
http://www.motinfo.gov.uk/internet/htdocs/m3s04000104.htm
Yeah I think this would fail .
I am assuming you are taking about fitting undersized tyres on a wheel rim and "stretching" them to fit.
Wether or not it is legal I do not know but I imagine it would be hard not to get tugged by the Police ( oo err missus ) often with tyres like this on.
Thanks for the reply,
I was talking about fitting undersized tyres to the wheel rim.
I was asked this by one of my students yesterday and my first thought was about the tyre bead being seated correctly.
If anyone else can clarify about the legal issues it would be appreciated.
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Bones n Hombre
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Posted: Tue Feb 9th, 2010 03:14 pm |
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Reason for rejection 4.1 1d
"Tyre incorrectly seated on the wheel rim"
http://www.motinfo.gov.uk/internet/htdocs/m3s04000104.htm
Yeah I think this would fail .
I am assuming you are taking about fitting undersized tyres on a wheel rim and "stretching" them to fit.
Wether or not it is legal I do not know but I imagine it would be hard not to get tugged by the Police ( oo err missus ) often with tyres like this on.
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greasemonkey1978
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Posted: Tue Feb 9th, 2010 10:18 am |
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Hi I hope i'm posting this query in the right section as i'm new to the forum.
I was wondering if anyone could advise me if a car would be considered road legal and pass an MOT if it was fitted with stretched tyres.
I do not have any specs for the wheels and tyres used at the moment as this is a query for a student of mine.
Thanks
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