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#1
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Serious Tire Questions for the uninitiated
I notice that the Conti GP 5000 I have and even the old GP II 4's, have a direction of rotation on the sidewall. Now mind you I so far have put the tires with the proper rotational direction, but what happens if you don't. My guess is if you put them on the opposite way then does the bike go backwards when I start pedaling? Do the tires wear out different, or possible be off balance. But seriously what is the catch?
Deacon Mark |
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#2
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Serious Tire Questions for the uninitiated
On Tuesday, April 6, 2021 at 9:05:18 AM UTC-7, Mark cleary wrote:
I notice that the Conti GP 5000 I have and even the old GP II 4's, have a direction of rotation on the sidewall. Now mind you I so far have put the tires with the proper rotational direction, but what happens if you don't. My guess is if you put them on the opposite way then does the bike go backwards when I start pedaling? Do the tires wear out different, or possible be off balance. But seriously what is the catch? Deacon Mark Supposedly they are not supposed to have the same braking traction in the reverse direction. My complaints with them is that they wear so quickly. They DO have great traction but I don't think that it is any better than the Michelin Pro4. I have also used the Michelin Power Endurance and they work well too. But the Pro4's have a more reasonable price and don't wear so quickly. |
#3
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Serious Tire Questions for the uninitiated
Mark cleary wrote:
I notice that the Conti GP 5000 I have and even the old GP II 4's, have a direction of rotation on the sidewall. Now mind you I so far have put the tires with the proper rotational direction, but what happens if you don't. My guess is if you put them on the opposite way then does the bike go backwards when I start pedaling? Do the tires wear out different, or possible be off balance. But seriously what is the catch? Deacon Mark For optimum cornering, south of the equator, you're actually supposed to switch the tire's rotational direction. That's what I gained from listening in on a group of Conti engineers at Oktoberfest. They are afraid of losing court cases, and market shares, in Ecuador and Uganda due to locational confusion, and the frequent roadside tire changes provoked if the info were to become public knowledge, so it's a well-kept secret. Guess why so few humans live on Antarctica: The coreolis cornering drift is worst there, no road safety whatsoever! |
#4
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Serious Tire Questions for the uninitiated
On 4/6/2021 9:05 AM, Mark cleary wrote:
I notice that the Conti GP 5000 I have and even the old GP II 4's, have a direction of rotation on the sidewall. Now mind you I so far have put the tires with the proper rotational direction, but what happens if you don't. My guess is if you put them on the opposite way then does the bike go backwards when I start pedaling? Do the tires wear out different, or possible be off balance. But seriously what is the catch? Deacon Mark My guess is that it has to do with the "rain grooves" on the tread, to help them "pump" water away from the center. Doubt the direction makes much difference, though *reversing* direction after the tire has been used a lot may increase the chance of tread delamination (wild guess on my part). On knobbies, it's a different story. Shaped knobs bite into dirt/gravel differently depending on their direction. Mark J. |
#5
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Serious Tire Questions for the uninitiated
On 4/6/2021 12:05 PM, Mark cleary wrote:
I notice that the Conti GP 5000 I have and even the old GP II 4's, have a direction of rotation on the sidewall. Now mind you I so far have put the tires with the proper rotational direction, but what happens if you don't. My guess is if you put them on the opposite way then does the bike go backwards when I start pedaling? Do the tires wear out different, or possible be off balance. But seriously what is the catch? Deacon Mark Schwalbe says that for road tires, it's essentially cosmetic. From https://www.schwalbe.com/en/profil "Why are so many treads direction dependant? [sic] "In the case of a road tire the rolling direction is mainly important for aesthetic considerations. Tires marked with arrows simply look more dynamic.. "Off road, the rolling direction is far more important, as the tread ensures optimumconnection between the tire and the ground. The rear wheel transmits the driving force and the front wheel transmits the braking and steering forces. Driving and braking forces operate in different directions. That is why certain tires are fitted in opposite rotating directions when used as front and rear tires. "There are also treads without a specified rotating direction." -- - Frank Krygowski |
#6
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Serious Tire Questions for the uninitiated
On 4/6/2021 11:05 AM, Mark cleary wrote:
I notice that the Conti GP 5000 I have and even the old GP II 4's, have a direction of rotation on the sidewall. Now mind you I so far have put the tires with the proper rotational direction, but what happens if you don't. My guess is if you put them on the opposite way then does the bike go backwards when I start pedaling? Do the tires wear out different, or possible be off balance. But seriously what is the catch? Deacon Mark Consequences may be anywhere from Continental sending out a team to admonish you with a bullhorn from a helicopter during your ride, in German, about not following directions to maybe creating a fatal singularity which will end the universe as we know it. -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
#7
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Serious Tire Questions for the uninitiated
On 4/6/2021 9:05 AM, Mark cleary wrote:
I notice that the Conti GP 5000 I have and even the old GP II 4's, have a direction of rotation on the sidewall. Now mind you I so far have put the tires with the proper rotational direction, but what happens if you don't. My guess is if you put them on the opposite way then does the bike go backwards when I start pedaling? Do the tires wear out different, or possible be off balance. But seriously what is the catch? Don't put them on backwards. It's akin to trying to divide by zero. Seriously, it makes little difference. The theory behind it is that the grooves in the tire channel water away from the tire when riding on wet roads, and if mounted the other direction water will be channeled the other way, but I doubt if there's and evidence that this actually works. |
#8
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Serious Tire Questions for the uninitiated
Frank Krygowski writes:
Schwalbe says that for road tires, it's essentially cosmetic. To my knowledge, any tread on road bike tires is called "marketing tread" by Conti engineers. I am not sure, though, whether the internal layup of the various plies might be asymmetric. But I would be surprised if this were the case. Axel |
#9
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Serious Tire Questions for the uninitiated
Op dinsdag 6 april 2021 om 18:16:54 UTC+2 schreef :
On Tuesday, April 6, 2021 at 9:05:18 AM UTC-7, Mark cleary wrote: I notice that the Conti GP 5000 I have and even the old GP II 4's, have a direction of rotation on the sidewall. Now mind you I so far have put the tires with the proper rotational direction, but what happens if you don't.. My guess is if you put them on the opposite way then does the bike go backwards when I start pedaling? Do the tires wear out different, or possible be off balance. But seriously what is the catch? Deacon Mark Supposedly they are not supposed to have the same braking traction in the reverse direction. My complaints with them is that they wear so quickly. They DO have great traction but I don't think that it is any better than the Michelin Pro4. I have also used the Michelin Power Endurance and they work well too. But the Pro4's have a more reasonable price and don't wear so quickly. Another datapoint. I recently replaced the rear Continental GP5000 tire (32 mm version) after the first flat after 5500 km. Best allround tire IMO. I must admit that I seldom pay attention to the mounting direction mainly because I'm too lazy to look for the hard to see arrow in bad light conditions in my garage. Lou |
#10
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Serious Tire Questions for the uninitiated
On Tuesday, April 6, 2021 at 10:54:41 AM UTC-7, Axel Reichert wrote:
Frank Krygowski writes: Schwalbe says that for road tires, it's essentially cosmetic. To my knowledge, any tread on road bike tires is called "marketing tread" by Conti engineers. I am not sure, though, whether the internal layup of the various plies might be asymmetric. But I would be surprised if this were the case. Axel What I find odd is that most of the tire will be worn as thin as a piece of cheap toilet paper and yet those markings, I hesitate to call them grooves, are still showing. |
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