tread wear indicators on conti GP4000

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winona_rider
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tread wear indicators on conti GP4000

Postby winona_rider » Tue May 13, 2008 2:21 pm

hey - i am just wondering how worn out my tyres are.
the website says GP4000's have "tread wear indicators" but i have no idea what these look like.... can anyone enlighten me?

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sogood
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Postby sogood » Tue May 13, 2008 3:01 pm

Two little round pits. When the surrounding rubber has worn down to the base of these pits, then it's considered worn.
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winona_rider
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Postby winona_rider » Tue May 13, 2008 3:20 pm

thanks dude - i'd noticed those before and just thought i'd chipped the rubber...
:oops:

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DavidH
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Postby DavidH » Tue May 13, 2008 10:09 pm

Thanks for the tip. I thought they were a flaw in the tire. Didn't even occur to me how unusual it was for the same "flaw" to exist on both the front and rear tyre :oops:

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mikesbytes
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Postby mikesbytes » Tue May 13, 2008 10:35 pm

What about the other method.... change the tyre when you can see the threads.
If the R-1 rule is broken, what happens to N+1?

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HAKS
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Postby HAKS » Wed May 14, 2008 9:44 pm

i was wondering what those 2 rounds pits were, now i know :)

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uMP2k
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Postby uMP2k » Thu May 15, 2008 9:57 am

Cannot find any on mine - must mean they are due for replacement :oops:

isitonu
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Postby isitonu » Sun May 18, 2008 5:36 pm

Can someone explain the need for the rotation direction arrow on these tyres please. What are the consequences of rotating in the other direction?

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Postby 531db » Mon May 19, 2008 10:42 am

isitonu wrote:Can someone explain the need for the rotation direction arrow on these tyres please. What are the consequences of rotating in the other direction?


No consequences as such, other than the tread pattern may not be optimised for traction or water dispersal.

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wayno
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Postby wayno » Mon May 19, 2008 10:58 am

isitonu wrote:Can someone explain the need for the rotation direction arrow on these tyres please. What are the consequences of rotating in the other direction?


The back tyre wears quicker so becomes flat. As the rear wheel gets flat wear mark I give it a switch to prolong life.

Slightly off topic, are their tyre wear indicators on Pro 2 Race tyres?

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sogood
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Postby sogood » Mon May 19, 2008 11:23 am

mikesbytes wrote:What about the other method.... change the tyre when you can see the threads.

It's a question of increasing risk on oneself and material economy. Thinning tyres equate with reduced puncture resistance, increased risk of traction loss, increased risk of sudden rupture.
Bianchi, Ridley, Montague, GT, Garmin and All things Apple :)
RK wrote:And that is Wikipedia - I can write my own definition.

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Postby 531db » Mon May 19, 2008 1:21 pm

wayno wrote:
isitonu wrote:Can someone explain the need for the rotation direction arrow on these tyres please. What are the consequences of rotating in the other direction?


The back tyre wears quicker so becomes flat. As the rear wheel gets flat wear mark I give it a switch to prolong life.

Slightly off topic, are their tyre wear indicators on Pro 2 Race tyres?


The direction of rotation of a bicycle tyre has absolutely nothing to do with wear rate!

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wayno
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Postby wayno » Mon May 19, 2008 2:24 pm

Woops misread question. Michelins don't have a direction of rotation.

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mikesbytes
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Postby mikesbytes » Mon May 19, 2008 10:19 pm

sogood wrote:
mikesbytes wrote:What about the other method.... change the tyre when you can see the threads.

It's a question of increasing risk on oneself and material economy. Thinning tyres equate with reduced puncture resistance, increased risk of traction loss, increased risk of sudden rupture.


Ah, but less rubber will make the tyres faster :D
If the R-1 rule is broken, what happens to N+1?

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Postby 531db » Mon May 19, 2008 10:28 pm

mikesbytes wrote:
sogood wrote:
mikesbytes wrote:What about the other method.... change the tyre when you can see the threads.

It's a question of increasing risk on oneself and material economy. Thinning tyres equate with reduced puncture resistance, increased risk of traction loss, increased risk of sudden rupture.


Ah, but less rubber will make the tyres faster :D


Lighter maybe, but faster - no!

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