- News
- Reviews
- Bikes
- Accessories
- Accessories - misc
- Computer mounts
- Bags
- Bar ends
- Bike bags & cases
- Bottle cages
- Bottles
- Cameras
- Car racks
- Child seats
- Computers
- Glasses
- GPS units
- Helmets
- Lights - front
- Lights - rear
- Lights - sets
- Locks
- Mirrors
- Mudguards
- Racks
- Pumps & CO2 inflators
- Puncture kits
- Reflectives
- Smart watches
- Stands and racks
- Trailers
- Clothing
- Components
- Bar tape & grips
- Bottom brackets
- Brake & gear cables
- Brake & STI levers
- Brake pads & spares
- Brakes
- Cassettes & freewheels
- Chains
- Chainsets & chainrings
- Derailleurs - front
- Derailleurs - rear
- Forks
- Gear levers & shifters
- Groupsets
- Handlebars & extensions
- Headsets
- Hubs
- Inner tubes
- Pedals
- Quick releases & skewers
- Saddles
- Seatposts
- Stems
- Wheels
- Tyres
- Health, fitness and nutrition
- Tools and workshop
- Miscellaneous
- Buyers Guides
- Features
- Forum
- Recommends
- Podcast
forum
Are these normal on new tyres?
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.
If you're new please join in and if you have questions pop them below and the forum regulars will answer as best we can.
Latest Forum Topics
Latest Comments
- Keesvant 2 sec ago
Wish i had a camera, spotted a bus-driver. Driving a bus full of people using her phone while driving yesterday.
- espressodan 43 min 7 sec ago
Japan is a very compliant, low crime society....
- Born_peddling 1 hour 49 min ago
Athletes will always be that it's the technology through the years that's pushed time trials and race times. As a former downhill rider (for fun) I...
- Hirsute 5 hours 17 min ago
Genuinely remorseful https://www.bbc.co.uk/news/articles/crmz74v9z3eo Failed to stop.
- David9694 5 hours 24 min ago
Live: Car crashes into Sainsbury's petrol station kiosk at The Willows...
- Hirsute 5 hours 26 min ago
Hope it's at least a 3 season bag.
- Keesvant 7 hours 59 min ago
🤣🤣 i have been using cyclo cross bikes on the road for 15 years !...
- Tom_77 8 hours 44 min ago
Looking at some of my local byelaws, many of them are phrased along the lines of:...
- wtjs 8 hours 45 min ago
car is costly but once the tax etc is paid (which you can't avoid - well, outside of Lancs...)...
Add new comment
9 comments
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
Meaning - when you've cross-threaded a pedal or fitted something the wrong way round and it doesn't work
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.
Dave beat me to the punch! - wear indicators
they're great tyres by the way. I've just switched to them.
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.
You would think they'd put them on all their tyres?
Never seen them on Ultra sports, although there isn't much to them
It's a wear indicator. When the lil' hole disappears, time to swap 'em out.
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