Anyone having problems with conti tyres?
I'm going through conti GP4000 tyres at a rate of knots!
My son and I have returned 8 to the shop so far, each after a few days of use, with splits in them. Splits occur just above the rim, about 1 cm long, running in the direction of the circumference, rather than across the tyre. Each time the split occurs the tube blows. Replacement tubes can then only be pumped up to about 40 psi "to get home"
Returned first 6 to the shop (Halfords) then the next 2 to Conti direct. Always had replacments, but thats not the point. I just want tyres that don't split!
My son and I have returned 8 to the shop so far, each after a few days of use, with splits in them. Splits occur just above the rim, about 1 cm long, running in the direction of the circumference, rather than across the tyre. Each time the split occurs the tube blows. Replacement tubes can then only be pumped up to about 40 psi "to get home"
Returned first 6 to the shop (Halfords) then the next 2 to Conti direct. Always had replacments, but thats not the point. I just want tyres that don't split!
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Sounds like you've definitely had a bad batch... Even saying that I gave the Conti's a go earlier this year and was disappointed with there longevity and their wet weather handling. I've gone back to Michelin Pro Race and Pro Grip instead.
Cheers, Andy
http://www.stirlingtri.co.uk
like that. They would probably quietly recall them from the shops and hope it all blew
over. Could there be some problem in the way you're mounting them on the rims?
Not useing the proper tools or a bit to much brute force? Something like that? I like
the idea of trying another brand of tire. That should tell you a bit more about what's
happening. No offense intended, but my gut feeling is "installer error".
Dennis Noward
Checked the rims after the first time it happened and they're smooth as can be. Happens on front and back wheels.
I suspected a batch problem, given that the first few tyres all came from the same shop. I did return 2 to conti directly here:
Continental Tyre Group Ltd
191 High Street
Yiewsley
West Drayton
Middlesex
UB7 7XW
they didn't contact me or answer any of the question I asked, but they had me sent 2 replacments via a shop somewhere near them.
The tires aren't being over inflated - they're good for 120psi IIRC.
Have phoned conti and waiting for a reply . . . . . . . .
Will chase them on thursday. Meanwhile perhaps I'll try Michelin Pro Race and Pro Grip as suggested above.
I've used Michelin Pro Race2 with no problems and have been my preference over the last few years but I'm sure plenty of people have used Contis without seeing the problems you are having.
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I have had this problem once soon after I started cycling again with a Michelin tyre but it turned out to be a rough spot on the bead. I have used many Conti tyres since with no trouble like this.
I used 25mm GP4000s for the Tour of Flanders and White Rose this year and they performed well. I have not used them in the wet though but they still felt OK at 66mph down Dibbles Bridge hill on the WR. Much smoother ride than 23s.
It must be weight distribution, tyre pressures and riding styles that seem to affect how tyres are perceived by different people.
How do you find using the Michelin Krylions in the wet?
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My view? - Should be illlegal in Manchester, it rains here. Well it did today anyway.
Ive used sets of 4000's on my main bike for over a yearnever had a problem with them, and on my winter/commuter bike I use 4 seasons, great tyre in the wet. On both bikes I do 3-4000 miles a year, and yet with pro races I was replacing them every month due to tyre failures.
A lot of people complain of punctures early on in a tyres life, its to be expected. Go into any bike shop with new high end tyres and feel them. they all feel sticky right, this is the release agent (I think) used in the moulding process, after a week or soo its normally worn off, but whiles your tyre is sticky all those little stones and bits of glass you normally ride over are picked up by the tyre and have a habit of working their way in.
Re the original query it sounds like a batch problem, but I wouldnt expect anyone to admit to it....
Ring the bell and leg it...that really pi**es him off....
the competition 22 tubulars are pretty good. maybe not the fastest but very durable and good grip.
The reason I ask is that I was using Conti Supersonic Race 28's and had a similar problem in the summer which resulted in a bad crash after a blow out. I never followed up any investigation around the tubes as I had thrown out the packaging which meant I had no reference to the tube code but if it is the same tubes then it would be worth staying well away from them.
I had that and caused the same sympton you described. I realigned the blocks and have had no problem since.