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Continental GP4000S-II tires

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Continental GP4000S-II tires

Old 08-06-18, 09:33 PM
  #26  
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Conti GPs vs. Paselas

I wrote about my mostly good experiences with Continental Grand Prix tires which have been discontinued for 8+ years so it's not a fair comparison with the modern GP4000 II tires.

But... some of the features are similar: the exposed sidewalls have a very thin layer of brown rubber - polymer or whatever, the thread pitch is very fine which provides flexibility plus the tread rubber is very tough and lasts for a long time.

Paselas have a thicker layer of rubber over the sidewalls which gives a little more protection. The rubber compound on the Pasela treads is softer but very tough and as I said above, it wraps over the sidewalls a little more than on the Contis being discussed.

The center tread pattern on the Paselas wears down fast, maybe 1000 miles or less but after that the rubber wears well.



This is the rear tire from the first set of 700c x 25 Paselas I bought in 2007. It has well over 3000 miles on it (3 batteries in my Cateye speedo). The front shows much less wear. Since I switch bikes all of the time, my mileage results are not very representative of tread wear. YMMV



Old Conti GP with about 1500 miles on it, very little wear. One thing about the Conti GPs that I been using is when I've booted them for a side wall nick, I've usually replaced those tires with new ones and saved the repaired ones. Those nicks are/were just tiny frays in the sidewall threads but just to be on the safe side....

I use a strip of Tyvek that USPS mailing envelopes are made of and glue it in place with contact cement. I keep a piece of Tyvek in my tool kits in case I ever have to boot a tire on the road. It beats a dollar bill!


@Colnago Mixte " One major complaint I have had about GP4000s is the ridiculous amount of thread that comes off these sometimes. I had it wrapped around my front axle, it was everywhere, and afterward I was afraid to use the tire because of the fabric hanging out of the sidewalls."

That's just a single layer fabric strip over the bead but but I agree, they constantly unravel leaving strings everywhere. It's annoying because with some rims they flare out and the brake pads rub on the strips making disturbing sounds.

You would think that over the years Continental would have come up with a better solution.



Apples and Oranges comparison:

IMO, 700c x 23 Paselas have a terrible ride. The 700c x 25 and 28 tires are softer, smoother riding than the Conti 700c x 23s which measure 24mm. It's not just because of the wider tires, it's the feel of the rubber on the road (boring).

The Conti GPs have an exciting ride and corner much better.

Last year I bough a pair of the Conti Grand Prix Classic 700c x 25 tires that were being hyped so much. I haven't gotten around to using them yet. They didn't fit well on the rims I tried to mount them on so I'll have to wait to try them again.



BTW I've gotten most of the sidewall nicks on the Conti GPs riding in the evening or at night when splits in the asphalt that the tires fall into are not as visible and hard to avoid.

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Old 08-10-18, 05:47 PM
  #27  
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Improved Continental Sidewall/Bead Strip

@Colnago Mixte mentioned the amount of threads that came off of the fabric covering the side walls where they meet the rims. Continental changed the design

Old design- fabric strip to protect the casing at the rim.



The fabric shredded and threads went all over the place.



It also flared out and rubbed on the brake pads on some bikes.



New Continental design, the protective strip is embedded in rubber so there shouldn't be loose threads anymore.



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Old 08-10-18, 08:02 PM
  #28  
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Originally Posted by verktyg View Post
I wrote about my mostly good experiences with Continental Grand Prix tires which have been discontinued for 8+ years so it's not a fair comparison with the modern GP4000 II tires.

But... some of the features are similar: the exposed sidewalls have a very thin layer of brown rubber - polymer or whatever, the thread pitch is very fine which provides flexibility plus the tread rubber is very tough and lasts for a long time.

Paselas have a thicker layer of rubber over the sidewalls which gives a little more protection. The rubber compound on the Pasela treads is softer but very tough and as I said above, it wraps over the sidewalls a little more than on the Contis being discussed.

The center tread pattern on the Paselas wears down fast, maybe 1000 miles or less but after that the rubber wears well.



This is the rear tire from the first set of 700c x 25 Paselas I bought in 2007. It has well over 3000 miles on it (3 batteries in my Cateye speedo). The front shows much less wear. Since I switch bikes all of the time, my mileage results are not very representative of tread wear. YMMV



Old Conti GP with about 1500 miles on it, very little wear. One thing about the Conti GPs that I been using is when I've booted them for a side wall nick, I've usually replaced those tires with new ones and saved the repaired ones. Those nicks are/were just tiny frays in the sidewall threads but just to be on the safe side....

I use a strip of Tyvek that USPS mailing envelopes are made of and glue it in place with contact cement. I keep a piece of Tyvek in my tool kits in case I ever have to boot a tire on the road. It beats a dollar bill!


@Colnago Mixte " One major complaint I have had about GP4000s is the ridiculous amount of thread that comes off these sometimes. I had it wrapped around my front axle, it was everywhere, and afterward I was afraid to use the tire because of the fabric hanging out of the sidewalls."

That's just a single layer fabric strip over the bead but but I agree, they constantly unravel leaving strings everywhere. It's annoying because with some rims they flare out and the brake pads rub on the strips making disturbing sounds.

You would think that over the years Continental would have come up with a better solution.



Apples and Oranges comparison:

IMO, 700c x 23 Paselas have a terrible ride. The 700c x 25 and 28 tires are softer, smoother riding than the Conti 700c x 23s which measure 24mm. It's not just because of the wider tires, it's the feel of the rubber on the road (boring).

The Conti GPs have an exciting ride and corner much better.

Last year I bough a pair of the Conti Grand Prix Classic 700c x 25 tires that were being hyped so much. I haven't gotten around to using them yet. They didn't fit well on the rims I tried to mount them on so I'll have to wait to try them again.



BTW I've gotten most of the sidewall nicks on the Conti GPs riding in the evening or at night when splits in the asphalt that the tires fall into are not as visible and hard to avoid.

verktyg
I just mounted a set of these on my Bianchi's Mavic Open 4 CDs. They were a little tight, but not too much of a problem. They look a little wide to me, but I had been used to 23c tires. I just finished some other work on the bike so hope to ride those tires this weekend!
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Old 08-11-18, 01:06 PM
  #29  
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The really great thing about wider tires (besides their softer ride, longer wear and better traction) is that the tire is less likely to fall into a groove as Chas stated, and less likely to get hooked on a seam in the pavement. The wider tire better spans some grip on the pavement to each side of the defect, rendering it less dangerous.

The cloth strip is called a chafer strip, sometimes it is reinforced with a thickness of rubber to combat pinch flats when off-roading, especially heavier-duty and downhill tires. Good to see that the strip on Conti tires is now getting vulcanized to the tire in the molding process, instead of being glued on. I've seen pulleys that would barely turn after getting threads wrapped up in the pulley, creating a possibly-dangerous situation.
My other beef with Conti tires was that there was no size info actually printed on the tire, just some barely-visible raised lettering that became invisible with age. So when replacing a tire, it was actually hard to see what size tire you were replacing and you had to guess. Both Michelin and Conti now print the size in at least one location on one side of the tire.
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Old 08-11-18, 03:36 PM
  #30  
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I just put 28mm GP 4000ll on my PX-10 Commuter to start the new school year. Tried them out on my route yesterday (37 m round trip) and they were pretty sweet at 80 psi. No need to ride the paint for smooth riding.
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Old 12-23-18, 08:12 AM
  #31  
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Conti GP Classic Update

This is an out-of-the-blue comment, but I've been reading some recent tire-related posts and thought I'd pass this along.
A few months ago, I put Continental GP Classics on my 1984 Bianchi Tipo Corsa. They only came in (and as far as I know still do) 25c. I was used to 23s. They set up looking a little "wide" to me but they ride great and I am very happy with them.
One word of caution to anyone considering a similar switch. The tire cannot be installed or removed from my bike when the tire is fully inflated. When installed, there seems to be maybe 7mm between the tire and the FD clamp. I never thought the clearances on my frame were that tight.
I never really need to remove the wheel with the tire inflated, but now it just bothers me. I almost want to switch back to 23s because of it, but I otherwise can't complain about the tires. I'm hoping Continental comes out with a more narrow version.
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Old 12-23-18, 09:37 AM
  #32  
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Mostly ride 4000's and Gatorskins on my road bikes. Good mileage and great flat protection. My gripe would be how easy they give up rubber under hard braking. Good thing is i can always find a single at the swap meets. About two feet of skid going into a hairpin...,
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Old 12-23-18, 09:50 AM
  #33  
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With the GP5000's coming into the market, some cheaper prices may be around for the GP4000 in it's variations. With the pound down vs. the dollar due to Brexit problems, now is not a bad time to shop UK sites. I just picked up 4 GP4000sII's, 2 in 25, 2 in 28.

They definitely run bigger than spec'd. On a Velocity A23 (as @Salamandrine noted), the 25's can run wider, as can the 28's. My Klein can run 700x28 Clement Strada LGG just fine, but not the 700x28 4000's. Since my Klein is a tourer, I'll put up with the sluggish Clements, but I'd love it if they were as agile as the Conti's.

No complaints about the ride, including on 45-50 mph descents (per my Garmin). The confidence is there. Light enough, agile enough, and roll easy.

I pretty much take the GP4000 series tires for granted now.
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Old 12-23-18, 09:53 AM
  #34  
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Originally Posted by Bianchi84 View Post
This is an out-of-the-blue comment, but I've been reading some recent tire-related posts and thought I'd pass this along.
A few months ago, I put Continental GP Classics on my 1984 Bianchi Tipo Corsa. They only came in (and as far as I know still do) 25c. I was used to 23s. They set up looking a little "wide" to me but they ride great and I am very happy with them.
One word of caution to anyone considering a similar switch. The tire cannot be installed or removed from my bike when the tire is fully inflated. When installed, there seems to be maybe 7mm between the tire and the FD clamp. I never thought the clearances on my frame were that tight.
I never really need to remove the wheel with the tire inflated, but now it just bothers me. I almost want to switch back to 23s because of it, but I otherwise can't complain about the tires. I'm hoping Continental comes out with a more narrow version.
This is a common problem with a lot of racing bikes with tight clearances between the tire and seat post. I think it's more of a technique issue. I had the same problems, and somehow get them in/out, perhaps due to sheer stubbornness. The calipers, can pose the same problem, even with QR. I've had to tweak my brake adjustment on a couple of bikes to make the swaps.
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Old 12-23-18, 10:08 AM
  #35  
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If 23mm is too wide, they are available in 20mm. $25.95 each.

https://planetcyclery.com/continenta...caApQHEALw_wcB

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Old 12-23-18, 04:26 PM
  #36  
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I actually like them as gravel tires in 28ís (and want to try the 5000 32ís). The downside is no side knobs like most gravel tires have, but learn to slide and no problem.
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Old 12-23-18, 08:57 PM
  #37  
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I tried them on the gravel on Scozim's ride in Palouse in July. Tore a huge hole in one sidewall/main tread area on the rear tire. Two flats in five miles.

You might have noticed that I swapped them out for size 25 Vittoria Rubino Pro III's the night before the Dare....
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Old 12-23-18, 11:36 PM
  #38  
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Iím afraid to try them, for they may ruin me for other, more practical tires.

I went with Michelin Pro 4 Endurance on my last build, mainly because they are nearly indestructible and still have low rolling resistance at a reasonable weight. Since I am a bike shop Rip Van Winkle from the 1990ís, these tires are far superior to anything Iíve ever had. I love the ride! Iím just going to live in my bike tire bubble for now.

But the 5000ís are tubeless? Hmmmmm.... I just happen to be running tubeless ready wheels.... Maybe after the prices come down they will be too difficult to resist!
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Old 12-23-18, 11:41 PM
  #39  
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Originally Posted by HarborBandS View Post
Iím afraid to try them, for they may ruin me for other, more practical tires.

I went with Michelin Pro 4 Endurance on my last build, mainly because they are nearly indestructible and still have low rolling resistance at a reasonable weight. Since I am a bike shop Rip Van Winkle from the 1990ís, these tires are far superior to anything Iíve ever had. I love the ride! Iím just going to live in my bike tire bubble for now.

But the 5000ís are tubeless? Hmmmmm.... I just happen to be running tubeless ready wheels.... Maybe after the prices come down they will be too difficult to resist!
The "Grand Prix 5000" is not tubeless.
The "Grand Prix 5000 TL" is tubeless.
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Old 12-23-18, 11:47 PM
  #40  
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If you like the GP-4000 wait till you try the GP-5000. I have all three popular Continental tires on road bikes. What should be my fastest bike has Gatorskins. Why? because that's what I found on sale when I needed tires and have had good luck with them in the past. My mostly stock Ironman has nearly new GP-4000's. It's a heavier bike with 7 speed Suntour GPX drive train. Its nearly as fast as the C/F bike and actually feels faster. The third is another Ironman with 10 speed 105 drive train. It had Gatorskins on it for a little while and with them I was a little slower than the C/F bike. I put a pair GP-5000's on it I can average around 1 mph faster than either of the other bikes. I know every ride is different but this is the same route I have ridden over 100 times and usually average very close to the same speed on any given day if I'm on the same bike. They were the easiest tire I have ever mounted and that kind of worried me but I have had no problems with them so far.
If the 5000's continue to perform like they are now I will switch to them as I need tires. Yep they are more expensive but I don't think bike tire cost are that big a deal if they up my fun factor and riding that old bike with all the modern stuff on it is a lot of fun.
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Old 12-23-18, 11:49 PM
  #41  
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Originally Posted by Shimagnolo View Post
The "Grand Prix 5000" is not tubeless.
The "Grand Prix 5000 TL" is tubeless.
The TL is supposed to be even better than the 5000!
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Old 12-23-18, 11:57 PM
  #42  
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Originally Posted by TXsailor View Post
The TL is supposed to be even better than the 5000!
I am curious. Iíve never run a tubeless set up before, but feel like I should give it a try, since Iíve already got the wheels and Continental FINALLY has a tubeless option available.... if I can manage to ever wear out my Michelins.
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Old 12-24-18, 03:39 AM
  #43  
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Yup, the GP4kS-II prices are coming down. I've put a few on the Amazon wishlist. Might try them to replace my former favorite Schwalbe One V-Guard.

If the GP4kS-II hold up as well as the cheaper Conti Ultra Sport II they'll be a bargain. I'm still liking the US2 for everyday use on the Ironman, including on the Cycleops trainer. No excessive wear from the trainer's metal roller. But the 700x25 US2 definitely isn't as spritely as the 700x23 Schwalbe.
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