Are these normal on new tyres?

humpyg, July 16, 2011

Hi all,
I've bought 2 new continental gp4000s tyres, and both of them have 2 small holes/indents in them. I'm just wondering if this is normal or if there's a dodgy batch. I haven't noticed these on previous tyres (different makes).

For pics, please see:
http://www.scuk.co.uk/pic1.jpg
http://www.scuk.co.uk/pic2.jpg

Thanks.

Tags

Road.cc bike forum

Never seen them on any Continental's i've bought, but i've never had GP4000's

It could just been the way they are made

My BIG Transfer thread
Move aside Victoria Pendleton, Manon Bourdiaux is where its at

posted by Gkam84 [4689 posts] 16th July 2011 - 18:18

It's a wear indicator. When the lil' hole disappears, time to swap 'em out.

posted by Dave Atkinson [5321 posts] 16th July 2011 - 18:34

You would think they'd put them on all their tyres?

Never seen them on Ultra sports, although there isn't much to them

My BIG Transfer thread
Move aside Victoria Pendleton, Manon Bourdiaux is where its at

posted by Gkam84 [4689 posts] 16th July 2011 - 18:57

Many thanks Dave, spot on
On closer look it says TWI ^. Now I know what that means. I couldn't see any mention in the instructions it came with.

posted by humpyg [12 posts] 16th July 2011 - 18:59

Dave beat me to the punch! - wear indicators they're great tyres by the way. I've just switched to them.

posted by giff77 [586 posts] 16th July 2011 - 19:01

agree about them being a good tyre.just swopped onto them from gators might be me but they feel to have a bit more grip and a bit faster.

posted by mpt68 [66 posts] 16th July 2011 - 19:22

You read the instructions for tyres?
Wow - I'm not sure if I've ever made it through a full instruction booklet for ANY bike component.

29er singlespeeds - the way forward, or the way backword?

posted by crimpit [2 posts] 16th July 2011 - 22:44

crimpit wrote:

You read the instructions for tyres?
Wow - I'm not sure if I've ever made it through a full instruction booklet for ANY bike component.

Ha ha, no I don't, well not normally, but because of these odd holes I looked at the instructions to see if there was any mention of them, and there wasn't. I generally only read instructions when there's an issue with something

posted by humpyg [12 posts] 17th July 2011 - 15:53

humpyg wrote: