tread wear indicators on conti GP4000

Workshop tales, trials and disasters.
Maintenance tips, techniques and myths.
Technical discussion, description and outright lies

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?
User avatar
winona_rider
 
Posts: 1076
Joined: Sun Dec 16, 2007 4:26 pm
Location: Brisbane

by BNA » Tue May 13, 2008 3:01 pm

BNA
 

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.
Bianchi, Ridley, Montague, GT, Garmin and All things Apple :)
RK wrote:And that is Wikipedia - I can write my own definition.
User avatar
sogood
 
Posts: 17082
Joined: Thu Aug 31, 2006 7:31 am
Location: Sydney AU

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:
User avatar
winona_rider
 
Posts: 1076
Joined: Sun Dec 16, 2007 4:26 pm
Location: Brisbane

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:
User avatar
DavidH
 
Posts: 346
Joined: Mon Sep 03, 2007 10:54 am
Location: Kaleen, ACT

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

What about the other method.... change the tyre when you can see the threads.
A helmet saved my life
User avatar
mikesbytes
Super Mod
Super Mod
 
Posts: 15010
Joined: Thu Dec 01, 2005 10:42 pm
Location: Tempe, Sydney

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

i was wondering what those 2 rounds pits were, now i know :)
User avatar
HAKS
 
Posts: 2330
Joined: Sun Apr 06, 2008 10:28 pm
Location: Canberra, AUS

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

Cannot find any on mine - must mean they are due for replacement :oops:
User avatar
uMP2k
 
Posts: 614
Joined: Mon Nov 27, 2006 5:22 pm
Location: Perth, Western Australia

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?
isitonu
 
Posts: 9
Joined: Fri Apr 18, 2008 9:53 pm

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.
531db
 
Posts: 969
Joined: Mon Nov 20, 2006 6:25 pm
Location: Riding a real steel bike - somewhere!

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?
User avatar
wayno
 
Posts: 608
Joined: Wed Apr 11, 2007 8:59 pm
Location: Drummoyne, Sydney

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.
User avatar
sogood
 
Posts: 17082
Joined: Thu Aug 31, 2006 7:31 am
Location: Sydney AU

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!
531db
 
Posts: 969
Joined: Mon Nov 20, 2006 6:25 pm
Location: Riding a real steel bike - somewhere!

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

Woops misread question. Michelins don't have a direction of rotation.
User avatar
wayno
 
Posts: 608
Joined: Wed Apr 11, 2007 8:59 pm
Location: Drummoyne, Sydney

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
A helmet saved my life
User avatar
mikesbytes
Super Mod
Super Mod
 
Posts: 15010
Joined: Thu Dec 01, 2005 10:42 pm
Location: Tempe, Sydney

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!
531db
 
Posts: 969
Joined: Mon Nov 20, 2006 6:25 pm
Location: Riding a real steel bike - somewhere!


Return to The Shed

Who is online

Users browsing this forum: Greystoke



Popular Bike Shops
Wiggle Wiggle UK
Ground Effect Ground Effect NZ
Ebay Ebay AU
Chain Reaction Cycles CRC UK

“Bicycles BNA Twitter
“Bicycles BNA Facebook
“Google+ BNA Google+
“Bicycles BNA Newsletter

> FREE BNA Stickers