Continental GP 5000 tyres

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rodneycc
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Continental GP 5000 tyres

Postby rodneycc » Thu Nov 08, 2018 10:16 pm

These tyres sound interesting. Next generation up from the GP4000s IIs.

https://cyclingtips.com/2018/11/contine ... -road-tire
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Re: Continental GP 5000 tyres

Postby ironhanglider » Thu Nov 08, 2018 10:27 pm

Probably the best thing about them will be the sales of GP4ks as they are now obsolete.

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Continental GP 5000 is here

Postby 10speedsemiracer » Fri Nov 09, 2018 12:50 am

Conti have finally entered the road tubeless market, releasing the Continental Grand Prix 5000 (also comes as a clincher) :

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Initial European pricing is 75euro for the tubeless GP5000-TL and 63euro for the clincher, so not a cheap tyre. Comes in 23mm > 32mm.

https://www.continental-tires.com/bicycle/tires/race-tires/grand-prix-5000
Last edited by find_bruce on Fri Nov 09, 2018 10:01 am, edited 1 time in total.
Reason: Merge with existing topic
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Neddysmith
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Re: Continental GP 5000 is here

Postby Neddysmith » Fri Nov 09, 2018 9:09 am

So the good news is hopefully the GP 4000 will come down in price??????? hahaha

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Re: Continental GP 5000 is here

Postby 10speedsemiracer » Fri Nov 09, 2018 9:20 am

Neddysmith wrote:So the good news is hopefully the GP 4000 will come down in price??????? hahaha


..or the bad news, and they discontinue.
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Re: Continental GP 5000 tyres

Postby LateStarter » Fri Nov 09, 2018 9:34 am

GP4000 has been good for me, bicyclerollingresistance says all sizes are a couple of mm oversize, my 28s measure 31mm and measured (drum) to have lower rolling resistance than the narrower ones, will be interesting to get actual measurements on the GP5000 as I would be tempted to go 32 but will be tight between stays if too much oversize. I can wait till they drop in price.

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Re: Continental GP 5000 is here

Postby LateStarter » Fri Nov 09, 2018 9:57 am

10speedsemiracer wrote:
Neddysmith wrote:So the good news is hopefully the GP 4000 will come down in price??????? hahaha


..or the bad news, and they discontinue.

BikeRadar says...

"As a running change, Continental has ended production of the GP 4000 for several months, and you will only find the new GP 5000 once existing stock in the market is exhausted..."

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Re: Continental GP 5000 is here

Postby RobertL » Fri Nov 09, 2018 11:17 am

"As a running change, Continental has ended production of the GP 4000 for several months, and you will only find the new GP 5000 once existing stock in the market is exhausted..."


Should be some good end-of-stock sales around the place soon then...
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Mububban
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Re: Continental GP 5000 tyres

Postby Mububban » Sat Nov 10, 2018 1:07 am

Clincher in 23, 25, 28 and 32mm.
Tubeless in 25, 28 and 32mm.

20% improved puncture protection and 12% less rolling resistance compared to GP4000 are the official claims.

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Re: Continental GP 5000 tyres

Postby AUbicycles » Sat Nov 10, 2018 4:28 am

Speculating on the GP 4000's - how long will they keep?

Car tyres have a lifespan and if you get new car tyres that have already been sitting in the racks for 1 or 2 years, that's not the best (as I understand). So how many GP 4000's can I buy and stockpile for how long?

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foo on patrol
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Re: Continental GP 5000 tyres

Postby foo on patrol » Sat Nov 10, 2018 6:10 am

I'm a believer in not folding tyres to store them for later use. If there are no folds in them, then you are not having any points where the rubber has been stretched from normal and making a crease point. :wink:

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Re: Continental GP 5000 tyres

Postby 10speedsemiracer » Sat Nov 10, 2018 6:59 am

foo on patrol wrote:I'm a believer in not folding tyres to store them for later use. If there are no folds in them, then you are not having any points where the rubber has been stretched from normal and making a crease point. :wink:

Foo


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Re: Continental GP 5000 tyres

Postby 10speedsemiracer » Sat Nov 10, 2018 8:30 am

AUbicycles wrote:Speculating on the GP 4000's - how long will they keep?

Car tyres have a lifespan and if you get new car tyres that have already been sitting in the racks for 1 or 2 years, that's not the best (as I understand). So how many GP 4000's can I buy and stockpile for how long?


I've always been led to believe that if stored in a dry, dark place then 3-4 years.
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Re: Continental GP 5000 tyres

Postby Tim » Sat Nov 10, 2018 8:32 am

AUbicycles wrote:Speculating on the GP 4000's - how long will they keep?


I still have a 23mm first generation GP4000 that's probably about five years old.
Still in it's box but wrapped in a ziplock plastic bag and stored in the dark.
I fitted one of a pair of the above 18 months ago, no problems. The rubber is still supple and no sign of perishing. Remains to be seen if i get my typical 7000-8000km mileage from them.
I mentioned in a different thread my impressive 12,000km mileage from a pair of 28mm GP4000 II's. I fitted them to a new bike in April 2015. They've just about had the gong.

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Re: Continental GP 5000 tyres

Postby singlespeedscott » Sun Nov 11, 2018 6:19 am

Stupid recommended tyre pressures on the conti web site. Who in their right mind would run 32mm tyres at 85psi.
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Re: Continental GP 5000 tyres

Postby trailgumby » Sun Nov 11, 2018 4:53 pm

10speedsemiracer wrote:
AUbicycles wrote:Speculating on the GP 4000's - how long will they keep?

Car tyres have a lifespan and if you get new car tyres that have already been sitting in the racks for 1 or 2 years, that's not the best (as I understand). So how many GP 4000's can I buy and stockpile for how long?


I've always been led to believe that if stored in a dry, dark place then 3-4 years.

I would add, in a sealed bag or box with minimal airspace. I used to do this for R/C model car tyres and it makes a massive difference to keeping them fresh, which was immediately noticeable on the stopwatch. So I do the same with my bike tyres.

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Re: Continental GP 5000 tyres

Postby Arbuckle23 » Sun Nov 11, 2018 5:15 pm

trailgumby wrote:I would add, in a sealed bag or box with minimal airspace. I used to do this for R/C model car tyres and it makes a massive difference to keeping them fresh, which was immediately noticeable on the stopwatch. So I do the same with my bike tyres.


Used to cling wrap our GoKart race tyres in between races as well.
Same base theory.

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Re: Continental GP 5000 tyres

Postby AUbicycles » Mon Nov 12, 2018 7:20 pm

Tyre warmers like in Formula 1... do they work on bike tyres?

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Re: Continental GP 5000 tyres

Postby chriso_29er » Mon Nov 12, 2018 8:35 pm

Thats to help them get up to track temperature faster. (Much higher than standing temp)
Bike tyres are not generating the heat to require warmers, they just need a very soft compound from the get go to generate grip.
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Re: Continental GP 5000 tyres

Postby Neddysmith » Tue Nov 13, 2018 10:39 am

AUbicycles wrote:Speculating on the GP 4000's - how long will they keep?

Car tyres have a lifespan and if you get new car tyres that have already been sitting in the racks for 1 or 2 years, that's not the best (as I understand). So how many GP 4000's can I buy and stockpile for how long?


Generally car tyres have a life span of 10yrs + if they being used or around 7yrs if just sitting on the shelf,

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Re: Continental GP 5000 tyres

Postby Comedian » Tue Nov 13, 2018 4:42 pm

AUbicycles wrote:Speculating on the GP 4000's - how long will they keep?

Car tyres have a lifespan and if you get new car tyres that have already been sitting in the racks for 1 or 2 years, that's not the best (as I understand). So how many GP 4000's can I buy and stockpile for how long?

Car tyres are supposed to be fitted within 5 years. Personally I'd be happy to store tyres (cool and dark environment) for a few years.

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Re: Continental GP 5000 tyres

Postby AUbicycles » Tue Nov 13, 2018 6:58 pm

chriso_29er - just being cheeky.

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Re: Continental GP 5000 tyres

Postby robbo mcs » Tue Nov 13, 2018 7:59 pm

Car tyres have the week and year of manufacture stamped on the side. For example if you look closely you might see 1418, which means week 14 of calendar year 2018. That way at least with car tyres you know if the cheap ones you get on special are actually 4 years old etc. Also, it lets you tell how old the tyres on your car are.

The main problem with car tyres is the compound hardens slowly with age, which reduces grip especially in the wet. It is not really a big problem for road cars, but can make a huge difference in race cars. There is a separate problem of rubber cracking, particularly on sidewalls, as tyres age. However, this is more related to environmental exposure in use, and does not really occur in well stored unused tyres.

Relevance to bike tyres? I don't know. However, I don't think there are any markers indicating date of manufacture? So if you buy tyres, you don't know if they have been sitting around on the shelf already for several years.

I wouldn't have any qualms using bike tyres that had been well stored for a few years, ie out of the sun, and not exposed to extreme temperatures

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Re: Continental GP 5000 tyres

Postby ironhanglider » Tue Nov 13, 2018 10:23 pm

singlespeedscott wrote:Stupid recommended tyre pressures on the conti web site. Who in their right mind would run 32mm tyres at 85psi.


Me, (on a tandem).

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Re: Continental GP 5000 tyres

Postby chriso_29er » Tue Nov 13, 2018 10:59 pm

AUbicycles wrote:chriso_29er - just being cheeky.


:D


On the topic of old car tyres.
I had a set of very aggressive off-road tyres (not the best in the wet as new) that got to about 10 years old.
They became so hard they didn't seem to wear anymore, and were absolutely dangerous in the wet. Still ok in the dry though.

Bike tyres I imagine would be similar, all may seem ok on an older tyre until you meet that white line while cornering in the wet one day.

I had an accident after cutting the sidewall of my front GP4000, in the interest of time I quickly chucked on an old original giant tyre I had lying around for the next ride. Happened to be wet and I went dont like a sack of potatos!
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