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Is it just me or is the Conti GP4Ks way too puncture prone for everyday use?

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Is it just me or is the Conti GP4Ks way too puncture prone for everyday use?

Old 06-09-13, 12:44 PM
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Is it just me or is the Conti GP4Ks way too puncture prone for everyday use?

I've been averaging a puncture per week since I got these tires (brand new), have less than 500 miles on them and now I'm not sure one is even usable after the worst puncture of my life yesterday simply commuting a smooth neighborhood road I've rode 2x a day for the last few months.

I was at 20-25mph when it looks like a sharp rock destroyed my tire/tube that would have easily pinged off of my old Bontrager T1 tires. Yes, the performance with the GP4Ks is light years better but I can't live with all these constant flats and a possible waste of a $40 tire less than 2 months after purchase.

Would you say I can patch this tire with a Park tire boot and keep riding it or is the tire done?



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Old 06-09-13, 12:45 PM
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That's just you
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Old 06-09-13, 12:52 PM
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I don't find them to be anymore prone to flats than Gatorskins. Try a boot in the tire. If it doesn't bulge, put it on the rear and ride it.
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Old 06-09-13, 01:02 PM
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I have them on my Audax bike. No more prone to punctures than anything else. Are you keeping the pressures up?
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Old 06-09-13, 01:20 PM
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It might just be you and/or your riding conditions.

I ride them exclusively and rarely have issues or flats.
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Old 06-09-13, 01:45 PM
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Sounds like it's your riding conditions. You probably need a more puncture resistant tire like the Durano Plus or Armadillo.
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Old 06-09-13, 01:51 PM
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I ride them and rarely flat.

I'm in the SE US and we don't have some of the aggressive thorns that plague riders out West. Plus I try to ride where cars ride and let them sweep the road for me. I've found bike paths and lanes have more sharp things on them than well traveled road.
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Old 06-09-13, 01:57 PM
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Avoid rocks, potholes, and dirt roads - or get a touring tire. Sharp edges will chew up road tires; it's just a matter of whether it shows nicks and occasional threadbare casing like yours, or whether it has a 1-2" knife wound and you can't get home on it. Touring tires are designed to take that kind of abuse, but have stiff sidewalls and don't deform as easily so don't ride as well; instead they're used at bigger sizes (28-32c) and lower pressure.

I'd just practice avoiding road debris - it'll be second nature soon enough.
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Old 06-09-13, 02:28 PM
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The sidewall on them has little/no serious protection. My wife won't use them. It only took a couple of flats for her to move to Gatorskins. I put 4500mi on mine last season. I did have a few flats that I probably would not have gotten with Gatorskins but I love the ride of 4000s so I accept the trade off. If that were my tire I'd replace it but you certainly could boot it and see what you think. If I got a lot of flats regularly due to trash on the road that I could not avoid I'd keep "upping" the ante to tougher tires until I reached a point where I could live with it. I think Gatorskins are the best next tougher tire, then Hardshell, and after that you are in serious, hard, very damped tires like Armadillo or Marathon Plus. Don't tolerate constant flats, but move to tougher tires one step at a time to retain as much road quality as you can.
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Old 06-09-13, 02:29 PM
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Punctures on GP4Ks last year: 2
Punctures on GP4Ks this year: 1

The year is half over, if I puncture again before the end of the year I will still have a solid 2 per year statistic It sounds like it's you.
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Old 06-09-13, 02:33 PM
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Punctures on GP4KS's in last 3-4 years: 0
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Old 06-09-13, 02:37 PM
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This year 1 puncture on a Krylion.

Last year:

~3000 miles on Krylions, 2 punctures
~3000 miles on GP4Ks, 1 puncture
~1000 miles on P3R, 0 punctures.
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Old 06-09-13, 02:45 PM
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Punctures in the last week: 6
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Old 06-09-13, 02:47 PM
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I've only had 1 puncture in 2 years, and it was from a piece of glass that cut the tire. Seems like it's the conditions!
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Old 06-09-13, 03:01 PM
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They have been the most flat resistant tires I've used so far. Ymmv, though.
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Old 06-09-13, 04:01 PM
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One puncture on them in the last couple of years. I'm going to go with "it's just you".
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Old 06-09-13, 04:16 PM
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Ive gotten about 10 flats on them this year, but I've gotten about the same on my other bike with 'puncture proof' tires. Goatheads just suck.
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Old 06-09-13, 04:40 PM
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0 punctures on mine since I switched from Gatorskins (which also gave me 0 punctures). Even if the 4000s were flatting regularly, I'd still keep them on the bike because the cornering feel is noticeably better during races with these than with Gatorskins, I have a lot more confidence carrying more speed through the bends.
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Old 06-09-13, 05:10 PM
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I use them year round. Have only had one puncture in the past two years, although I have changed tires twice because of small cuts to the outside of the tire.
The only puncture came from a normal paper staple a few days ago.

They are awesome tires, just have to be careful of what you run over.
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Old 06-09-13, 05:33 PM
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Is it just me or are bicycle tires way too puncture prone for everyday use?
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Old 06-09-13, 05:41 PM
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Same thing happened to me after my first 40 miles.

That tire hangs in my garage now.

Since then, double flat on the rear on one ride...and another rear flat last week. So, 4 for me in the last 1.5 months. I'm starting to have negative feelings towards them as well, but have another 3 to go through before I switch to something else. I'm hoping it was just my own bad luck.
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Old 06-09-13, 06:42 PM
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I've found them very durable, and that's riding on some pretty rough chip and seal.
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Old 06-09-13, 07:35 PM
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Take the lane and get outta the shoulder.
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Old 06-09-13, 08:00 PM
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I've had two GP4000s sidewalls blow out in the past year or so.

If you're getting flats every week, something is up, and you're not getting to the root of the problem. Either you're getting pinch flats from too low a pressure, or there's something in the rim, or something in the tire....
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Old 06-09-13, 08:16 PM
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Could be where different people ride. I had a big cut on the first one I ever tried, which was from hitting some metal that would have taken out most tires, but I've worn the last two out completely without losing them to flats.
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