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 Post subject: Tyre Age
PostPosted: Thu Nov 07, 2019 6:15 pm 
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Found this bit of info, should motorcycle tyres come under the same rule ?

Does the age of a tyre matter?

Tyre Safety: 5 Year Rule

Tyres are considered to be “new” and fit for retail up to 5 years from the date of production.

This is an industry standard based on the German BRV.

When in use, it is recommended that tyres are replaced when they reach 7 - 10 years old, (6 years in the case of caravans or trailers).

How To Tell A Tyre's Age

On the sidewall you will find a tyre's ‘DOT code’. One of the key pieces of information that can be gained from this is the date the tyre was manufactured.

Since the year 2000, the date section of the code - the last digits - has been made up of 4 numbers.

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The Smile

He rides so fast, He rides so quick, He rides faster than a speeding bullet.
In and out of the cars he goes, over bridges down narrow roads.
In to a bend he leans his bike, over and over as the bend is so tight.
Out of the bend on the other side, He pulls away, his back wheel does slides.
The tyre then grips with such a punch, the front wheel lifts, the gears he crunch.
He gains control and speeds away, He smiles as he lives to ride another day.


Poem by Martin. 1986


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 Post subject: Re: Tyre Age
PostPosted: Thu Nov 07, 2019 10:43 pm 
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The way I know it is:

a) Tyre is considered new (it can be sold as new without any further specification) if it is less than 3 years old (DOT-wise),
otherwise the tyre dealer would have to say it's older than that.

b) You won't get any problems from any of the officials (or legally) if it isn't older than 6 years.


The last part is MC-specific.

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 Post subject: Re: Tyre Age
PostPosted: Fri Nov 08, 2019 2:42 am 
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My Tyre guys won't keep anything on the shelf older than 3yrs 'Performance tyres UK' I have used them for 20yrs
My MOT guy's won't pass a tyre that older than 4 yrs,I have used the same guys for 30yrs.
I have absolute trust in both the above.
The year of manufacture is on the sidewall of tyres.

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 Post subject: Re: Tyre Age
PostPosted: Fri Nov 08, 2019 3:03 am 
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The 4 numbers mean week and year, so 4518, means the 45th week of 2018... Not 100% sure if it is week followed by year, or year followed by week.

EDIT

Just checked with a "live specimen" and yes, the 4 numbers are week and year.

:D

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 Post subject: Re: Tyre Age
PostPosted: Fri Nov 08, 2019 12:17 pm 
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Location: Wales Red F2 & Blue F2 fighter
I'm repainting my spare set of wheels.
The front wheel had no tyre. But the rear has a good tyre with 4mm to the wear limit.
I thought i could reuse the rear tyre, untill i looked at the date. it was made week 27 year 2011
I only bought it in 2016 new.
Just checked the tyres on Red and they were made in 2014 week 33. again only bought them in late 2016.
My Blue 9 tyre were made week 43 2018 so they were less than a year old when i bought them.
So i'm going to fit a new set of tyres to my spare wheels and fit them on to Red ready for next year.
I'm not use to having tyres last so long after owning a Busa and changing the rear every month in the summer.

So anyone know of any good pair deals going please.

_________________
The Smile

He rides so fast, He rides so quick, He rides faster than a speeding bullet.
In and out of the cars he goes, over bridges down narrow roads.
In to a bend he leans his bike, over and over as the bend is so tight.
Out of the bend on the other side, He pulls away, his back wheel does slides.
The tyre then grips with such a punch, the front wheel lifts, the gears he crunch.
He gains control and speeds away, He smiles as he lives to ride another day.


Poem by Martin. 1986


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 Post subject: Re: Tyre Age
PostPosted: Fri Nov 08, 2019 4:15 pm 
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ha!
I started this season on the 9, after a bit of a hiatus (after all, I've got 2 bikes..), on (what I then thought) a 2016 front tyre..
As I went to replace it, I noticed it was from 2013 :shock:
And then I remembered that I didnt replace the front to let it sit through the winter on it, so that I would put on a fresh on "next season".
..that was 2016.

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 Post subject: Re: Tyre Age
PostPosted: Fri Nov 08, 2019 6:33 pm 
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I would imagine my MOT tester would put an advisory notice on the certificate if I had an out of date tyre that had well in excess of the minimum tread....This would cover his ass and not cause me ball ache with the expense of replacement.

I get on well with my MOT techs,I tell them if it's a bike I've just rebuilt/or bought and with this, I've had two guys look the bike over helping one another tug and pull on linkages/bearings/suspension and on one occasion a road test...I return from the local cafe with bacon butties for the spanner monkies by way of returning the favour as there is little profit to be had from MOT testing

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 Post subject: Re: Tyre Age
PostPosted: Mon Nov 11, 2019 12:11 am 
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Location: plymouth, blue c2 ,blue f1 .
You will all moan most likely ,but I found a local guy had a matching front rosso2 I needed quickly before my only trackday last year, it had been fitted to get him thru an mot , so about 20 mile use, but being an older bike on 18” he couldn’t get a matching rear, then gave it to me for beer money a few years later after taking it off and storing it properly .cant remember what year it was already old but I had it scrubbed in and it worked lovely at the trackday and up till the present. It still works fine on the road.. i don’t do much mileage per year and ain’t changing it just cuz it’s past it’s use by date..

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 Post subject: Re: Tyre Age
PostPosted: Mon Nov 11, 2019 3:27 am 
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firebeast wrote:
You will all moan most likely ,but I found a local guy had a matching front rosso2 I needed quickly before my only trackday last year, it had been fitted to get him thru an mot , so about 20 mile use, but being an older bike on 18” he couldn’t get a matching rear, then gave it to me for beer money a few years later after taking it off and storing it properly .cant remember what year it was already old but I had it scrubbed in and it worked lovely at the trackday and up till the present. It still works fine on the road.. i don’t do much mileage per year and ain’t changing it just cuz it’s past it’s use by date..



AAAAaaaaahhhhhhhhhhhh BLASPHEMY!!!

:lol: :lol: :lol:

For me personally, I look at this with a pinch of salt... reality is that with time, the compounds on the tyre will start the "degrade" and with it, the tyre's ability to cope with the various stresses and whatever else we put them through. In some cases, you can see this degradation process, but in others you don't. I don't think that once tyre hits a certain age, that it turns to crap overnight, this is simply a "guideline" to help keep all us common plebes as safe as possible. Yes, tyres are not cheap, but they are also the only thing that truly keeps us upright.

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Ride to add life to your days, not days to your life!!!

ZX9R C2
Triumph Street Triple R (2011)

Arrow || K&N || HEL || NGK || STOMPGRIP || SBS || RACETECH


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 Post subject: Re: Tyre Age
PostPosted: Mon Nov 11, 2019 5:15 am 
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The 2 bikes we now ride the most, should have the tyres changed every 2 years at most.
The other 2 bikes i will change the tyres every 4 years no matter how much tread is on them.
What people do forget about is the Valve. These are the weak point.
The SV i just bought had tyre on it made in 2005. The valve just came away in my hand when i changes the tyres.
My Red 9 has done about 1000 miles since i rebuilt it in late 2016.
It's such a shame that the tyres will be 6 years old when i use it next. So new tyre will be fitted.
I'm going to put Maxxis Diamond on it, as i'm happy with the feel of them on the Blue 9.

_________________
The Smile

He rides so fast, He rides so quick, He rides faster than a speeding bullet.
In and out of the cars he goes, over bridges down narrow roads.
In to a bend he leans his bike, over and over as the bend is so tight.
Out of the bend on the other side, He pulls away, his back wheel does slides.
The tyre then grips with such a punch, the front wheel lifts, the gears he crunch.
He gains control and speeds away, He smiles as he lives to ride another day.


Poem by Martin. 1986


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 Post subject: Re: Tyre Age
PostPosted: Mon Nov 11, 2019 10:29 am 
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I reckon the Maxxis Diamond are better all-round than their'sport' tyre...nicer profile on the Diamond and very good in the wet.

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You take the blue pill—the story ends, you wake up in your bed and believe whatever you want to believe. You take the red pill—you stay in Wonderland, and I show you how deep the rabbit hole goes. Remember: all I'm offering is the truth.


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 Post subject: Re: Tyre Age
PostPosted: Mon Nov 11, 2019 5:28 pm 
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Location: plymouth, blue c2 ,blue f1 .
I knew I would get some replies to that lol. I have done hardly any decent riding this year , trackday was cancelled and with the vast array or good , bad , seriously fugly bikes I have owned /rode over last 22yrs, I can tell when things aren’t right to a level I am happy with ..If that one changes by next year then I will take it off , but I have a cracking little circuit a few miles away I use up and down ( nice and quiet and superb grip levels for a normal road )nearby that’s a great test bed for things and allows me to really push the bike hard, so if it feels different I spot things before doing any decent distance runs so I don’t get into as much trouble :smt023

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 Post subject: Re: Tyre Age
PostPosted: Mon Nov 11, 2019 10:18 pm 
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Location: plymouth, blue c2 ,blue f1 .
This was in today’s pspb mag dec issue by none other than Michelin’s top man .. so your welcome peeps :roll:


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 Post subject: Re: Tyre Age
PostPosted: Mon Nov 11, 2019 10:20 pm 
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Location: plymouth, blue c2 ,blue f1 .
Happy to post the whole section all about tyres if enough are interested.

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 Post subject: Re: Tyre Age
PostPosted: Mon Nov 11, 2019 11:25 pm 
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Good info

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Arrow || K&N || HEL || NGK || STOMPGRIP || SBS || RACETECH


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