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Clydesdales/Athenas (200+ lb / 91+ kg) Looking to lose that spare tire? Ideal weight 200+? Frustrated being a large cyclist in a sport geared for the ultra-light? Learn about the bikes and parts that can take the abuse of a heavier cyclist, how to keep your body going while losing the weight, and get support from others who've been successful.

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Old 06-28-12, 10:18 PM   #1
Tall Cool One
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Anybody having trouble with durability of Continental GP 4000 S tires???

I am 6' 7" tall and 240 - 250 lbs. Is anyone having trouble with GP 4000 S tires? I have been riding 25 mm tires since last August and I have had several tube flats and 3 or 4 blown tires either side wall or cuts where the rubber meets the road. I ALWAYS inflate to 120 psi before EVERY ride and try to avoid as much road debris as possible.

I like the feel of these tires on dry roads and LOVE the feel of them on wet roads. Does anyone have a recommendation for what I should do?
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Old 06-28-12, 10:23 PM   #2
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I ride the exact same tire...had my share of tube flats, but no tire issues...must have 600 miles or more on the tires (I know thats not a lot).

Every time (almost) I had a tube flat, I knew I hit a piece of glass or a hole really hard...had one slow leak that I never knew why.
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Old 06-29-12, 06:19 AM   #3
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I've ridden three sets so far, and the 4th just arrived. I ride them until they have a clear flat channel, not to the wear indicators. I get about 1,500 -- 2,000 miles a pair, with a rotation front-to-back at the midway point. I'm 205, and very hard on tires. Never flatted a GP4000s, and only twice on about a dozen sets of 28mm gatorskins.

If I were you I would VERY carefully check my rims for any burrs, nicks, peeling rim tape, or anything along those lines. IMHO, your experience is not due solely to the tires. BTW, 120 psi is above the maximum, IIRC. that may be part of it. I go 105 front and 110 rear. Max is 115, and if your pump is a little off (say 5psi), you may be pushing it.
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Old 06-29-12, 08:30 AM   #4
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No. They've done brilliantly for me.
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Old 06-29-12, 08:35 AM   #5
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I just installed a set of these the other day. So far I have about 10 miles on them with no trouble from the tire. They feel nice to me and the front tire is larger than I had before, so they look really big to me. I had the Conti set with the 22mm front and 23mm rear before these, so the 23mm front looks solid to me. They handle well so far, but as I said, I don't have many miles on them. I inflate to a little over 110 in the front and about 120 in the rear.
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Old 06-29-12, 08:42 AM   #6
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No. I sag the tires 5 to 10%.
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Old 06-29-12, 08:49 AM   #7
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No. I sag the tires 5 to 10%.
What does it mean to 'sag' the tires?
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Old 06-29-12, 08:54 AM   #8
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What does it mean to 'sag' the tires?
He is likely referring to: http://www.adventurecycling.org/reso...SIRX_Heine.pdf
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Old 06-29-12, 10:25 PM   #9
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I've been riding GP 4000 for years, haven't had the problems you're having. I put the new tire on the front and move the front to the rear. I get around 2000 miles out of the rear. I've had some flats, 2-3/yr. I do double centuries and ride about 8000 miles/yr. I inflate my tires to 105psi and really have no problems with them. I'm 6' and 235lbs.
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Old 06-29-12, 10:46 PM   #10
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I like the gatorskins... they wear like iron, I had one that had a bead defect, but other then that, Contis are pretty good tires.
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