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 Tyre Stretch Laws

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Crease!
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Crease!

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PostSubject: Tyre Stretch Laws   Tyre Stretch Laws EmptyTue Dec 15 2009, 21:59

1. GENERAL REQUIREMENTS 1.1. The motor vehicle must be provided with wheel guards (parts of the bodywork, mudguards, etc.).

1.2. The wheel guards must be so designed as to protect other road users, as far as possible, against thrown-up stones, mud, ice, snow and water and to reduce for those users the dangers due to contact with the moving wheels.



2. SPECIAL REQUIREMENTS 2.1. The wheel guards must meet the following requirements when the vehicle is in running order (see section 2.6 of Annex I to Directive 70/156/EEC) and the wheels are in the dead ahead position: 2.1.1. In the part formed by radial planes at an angle of 30 to the front and 50 to the rear of the centre of the wheels (see figure 1), the overall width (q) of the wheel guards must be at least sufficient to cover the total tyre width (b) taking into account the extremes of tyre/wheel combination as specified by the manufacturer and as indicated in section 5.2 of the certificate set out in Annex II. In the case of twin wheels, the total width over the two tyres (t) shall be taken into account. 2.1.1.1. For the purposes of determining the widths referred to in 2.1.1, the labelling (marking) and decorations, protective bands or ribs on tyre walls are not taken into account.



2.1.2. The rear of the wheel guards must not terminate above a horizontal plane 150 mm above the axis of rotation of the wheels (as measured at the wheel centres) and furthermore the intersection of the edge of the wheel guard with this plane (point A, figure 1) must lie outside the median longitudinal plane of the tyre, or in the case of twin wheels the median longitudinal plane of the outermost tyre.

2.1.3. The contour and location of the wheel guards shall be such that they are as close to the tyre as possible ; and in particular within the part formed by the radial planes referred to in 2.1.1, they shall satisfy the following requirements: 2.1.3.1. the projection - situated in the vertical plane of the tyre axis - of the depth (p) of the outer edge of the wheel guards, measured in the vertical longitudinal plane passing through the centre of the tyre, must be at least 30 mm. This depth (p) may be reduced progressively to zero at the radial planes specified in 2.1.1;

2.1.3.2. the distance (c) between the lower edges of the wheel guards and the axis passing through the centre of the wheels must not exceed 2r, "r" being the static radius of the tyre.



2.1.4. In the case of vehicles having adjustable suspension height, the abovementioned requirements must be met when the vehicle is in the normal running position specified by the vehicle manufacturer.



2.2. The wheel guards may consist of several components, provided no gaps exist between or within the individual parts when assembled.

2.3. The wheel guards must be firmly attached. However, they may be detachable either as a unit or in parts.



3. USE OF CHAINS 3.1. The manufacturer must certify that the vehicle is so designed that at least one type of snow chain can be used on at least one of the types of tyres approved for the drive wheels of that type of vehicle. One chain/tyre combination suitable for the vehicle must be specified by the manufacturer and indicated in section 5.1 of the certificate set out in Annex II.


Council Directive 78/549/EEC of 12 June 1978 on the approximation of the laws of the Member States relating to the wheel guards of motor vehicles

2.1.2. The rear of the wheel guards must not terminate above a horizontal plane 150 mm above the axis of rotation of the wheels (as measured at the wheel centres) and furthermore the intersection of the edge of the wheel guard with this plane (point A, figure 1) must lie outside the median longitudinal plane of the tyre, or in the case of twin wheels the median longitudinal plane of the outermost tyre.

2.1.3. The contour and location of the wheel guards shall be such that they are as close to the tyre as possible ; and in particular within the part formed by the radial planes referred to in 2.1.1, they shall satisfy the following requirements: 2.1.3.1. the projection - situated in the vertical plane of the tyre axis - of the depth (p) of the outer edge of the wheel guards, measured in the vertical longitudinal plane passing through the centre of the tyre, must be at least 30 mm. This depth (p) may be reduced progressively to zero at the radial planes specified in 2.1.1;


In short, the wheel must NOT protrude more than 30mm past the edge of the mudguard.

Thanks for all the replies so far. It seems Ian has it covered on the wheel width front. So anyone running these wheels needs to make sure there is less than 30mm extending outside of the main body of the car.


Dunlop
"RIM WIDTH
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. "

Toyo
"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. When mounting truck type radial tires use only wheels approved for radial tires.

NEVER put flammable substances in tire/rim assemblies at any time. Never put any flammable substance into a tire/rim assembly and attempt to ignite to seat the beads.

NOTE TO PROFESSIONAL TIRE INSTALLERS: Exceeding the maximum bead seating pressure The tire service person must NEVER INFLATE BEYOND 40 POUNDS PRESSURE TO SEAT BEADS unless specified by the tire manufacturer! "
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20v-turbo
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PostSubject: Re: Tyre Stretch Laws   Tyre Stretch Laws EmptyTue Dec 15 2009, 22:23

in simple words this means ?????


im too lazy to read it all sorry
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Crease!
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Crease!

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PostSubject: Re: Tyre Stretch Laws   Tyre Stretch Laws EmptyWed Dec 16 2009, 08:01

You can run stretch providing all the tyre tread is under the arch, and the wheel does not stick out more than 30mm from the side of the car!
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technique
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technique

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PostSubject: Re: Tyre Stretch Laws   Tyre Stretch Laws EmptyWed Dec 16 2009, 19:34

Crease! wrote:
You can run stretch providing all the tyre tread is under the arch, and the wheel does not stick out more than 30mm from the side of the car!

I f*cking hate seeing this thing posted up it means f*ck all (nothing personal mate people just keep posting it up).

It is an EEC council directive NOT roads traffics act.

If anyone is worried about this then please read the 10 page post below on Edition 38. I was chatting to Simpy all the way through his court case until it was thrown out of court because of how vague the law is.

Please read this post clicky if you are really worried about this.

Edit: sorry for the rant but this topic just gets me wound up lol Laughing

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mk1mel wrote:
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Cymro
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Cymro

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PostSubject: Re: Tyre Stretch Laws   Tyre Stretch Laws EmptyWed Dec 16 2009, 19:44

Its not even a law, its just another rambling suggestion from the nanny state. problem is police take it as gospel and many people just take it up the arse because they dont know it cant be enforced.

_________________
"If my calculations are correct, when this baby hits eighty-eight miles per hour... you're gonna see some serious shit"

McLOVIN - RE: Polo Show 2011 - There was a ginger alert at the gate?? Man that place is well ahead of the times, next they'll be installing gas fittings into the shower heads in the gingers showers...

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Crease!
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Crease!

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PostSubject: Re: Tyre Stretch Laws   Tyre Stretch Laws EmptyThu Dec 17 2009, 07:30

sorry mate, glad u could post up the decent info though!

just thought it would be good to post up as we all love a bit of poke, and its summat ive been looking into recently!
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technique
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technique

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PostSubject: Re: Tyre Stretch Laws   Tyre Stretch Laws EmptyThu Dec 17 2009, 18:24

Crease! wrote:
sorry mate, glad u could post up the decent info though!

just thought it would be good to post up as we all love a bit of poke, and its summat ive been looking into recently!

No worries mate, i spent about 2 months looking into it with Simpy and there is no real laws covering poke or stretch. You can be fined under section 40A of the Road Traffic Act but it is up to you whether you accept it. If you don't then likely it will be thrown out of court.

The Police as always wll think they know better Laughing

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mk1mel wrote:
you were at our marquee,doing all the moves too
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Cymro
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Cymro

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PostSubject: Re: Tyre Stretch Laws   Tyre Stretch Laws EmptyThu Dec 17 2009, 20:42

Simpy was lucky he had a thick as shit copper that thought the term "my opinion" would be enough to carry a conviction.

And the attitude of the other coppers on that forum was bang out of order.

But I've looked through the EEC directive and it isn't enforceable as cannot be applied to cars on the road before it was writen, it would be diffcult on newer cars.

One day modifying a vehicle will be illegal and there won't be space for people like us to drive round but until then let's carry on.

_________________
"If my calculations are correct, when this baby hits eighty-eight miles per hour... you're gonna see some serious shit"

McLOVIN - RE: Polo Show 2011 - There was a ginger alert at the gate?? Man that place is well ahead of the times, next they'll be installing gas fittings into the shower heads in the gingers showers...

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technique
VAG Wales Admin
technique

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PostSubject: Re: Tyre Stretch Laws   Tyre Stretch Laws EmptyThu Dec 17 2009, 21:51

He would have been luckier if he had a clever copper though as they would not have bothered in the first place lol.

I think there will be uproar if they ever try banning mods though. (vagwales cruise to number 10 Laughing Laughing )

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mk1mel wrote:
you were at our marquee,doing all the moves too
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Cymro
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Cymro

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PostSubject: Re: Tyre Stretch Laws   Tyre Stretch Laws EmptyThu Dec 17 2009, 22:56

If that happens then ill be there in this:

Maz 543 V12 38000cc

Tyre Stretch Laws Maz%20032

38L v12 quad valve engine

_________________
"If my calculations are correct, when this baby hits eighty-eight miles per hour... you're gonna see some serious shit"

McLOVIN - RE: Polo Show 2011 - There was a ginger alert at the gate?? Man that place is well ahead of the times, next they'll be installing gas fittings into the shower heads in the gingers showers...

Tyre Stretch Laws BannerOEM2-crop
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technique
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technique

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PostSubject: Re: Tyre Stretch Laws   Tyre Stretch Laws EmptyFri Dec 18 2009, 17:37

beast Cool

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mk1mel wrote:
you were at our marquee,doing all the moves too
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