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Road bike tire pressure

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Old 01-09-16, 11:46 AM
  #26  
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Originally Posted by Pirkaus
https://www.bikequarterly.com/images/TireDrop.pdf

Read this and adjust accordingly.
Please don't do this. This chart seriously under inflates any kind of performance tires.
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Old 01-09-16, 03:49 PM
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Originally Posted by datlas
You are correct. I was unsure if the guy is a troll or just foolish. Or maybe a foolish troll?? We have those too.
Lets not forget a trolling fool.
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Old 01-09-16, 04:00 PM
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Originally Posted by Bob Dopolina
Please don't do this. This chart seriously under inflates any kind of performance tires.
Really,,, this is what I've been using.
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Old 01-09-16, 04:02 PM
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Originally Posted by mvnsnd
Just because the side of the tire may say 110 psi does not mean that is the pressure one should fill it to.
I know, right? Take it up to 125.
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Old 01-09-16, 04:28 PM
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Originally Posted by tiras25
Correction. I wasn't thinking of just a rubber. But maybe to fill the tire with some plastic instance like polypropelen or some other polymer instead of the tube. So it stays hard and you don't have to pump air all the time.
As long as your rides are shorter than 4 hours, just pop a little blue pill in there. Rubber optional.
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Old 01-09-16, 06:03 PM
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Originally Posted by tiras25
Correction. I wasn't thinking of just a rubber. But maybe to fill the tire with some plastic instance like polypropelen or some other polymer instead of the tube. So it stays hard and you don't have to pump air all the time.
Polypropylene is the one thing you for sure do not want to use...unless your looking for a way to loosen your fillings. Trust me, polypropylene is one thing I know about.
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Old 01-09-16, 06:58 PM
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Yeah i'm 175 lbs and ride at 90 front and 95 back.
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Old 01-09-16, 07:33 PM
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Originally Posted by koolerb
Really,,, this is what I've been using.
It designed for max comfort but puta the pressure in a range that dramatically reduces performance and, in some instances, also reduces puncture resistance.

Tires are designed to work best, in all categories, withing a specific range of pressures. This chart ignores al of that and uses some imaginariry metric without showing why this metric even matters.

The trend away from rock hard 19mm tires is a good one but I think the linked article takes it too far.
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Old 01-09-16, 10:07 PM
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15% drop is fine, even if tire pressure is only one part of the equation. Sidewall stiffness is something 99% of these discussions ignore because it's not a simple number people can argue over but it is more important than psi.
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Old 01-10-16, 01:00 AM
  #35  
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Originally Posted by Spoonrobot
15% drop is fine, even if tire pressure is only one part of the equation. Sidewall stiffness is something 99% of these discussions ignore because it's not a simple number people can argue over but it is more important than psi.
But why 15% drop? What is this number based on and where did it come from? It seems to have been an arbitrary mumber pulled from someone's rump and has not meaning at all.

I would be more inclined to look at he manufacturer's recommended pressure rating and find a personal preference within that range.
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Old 01-10-16, 09:16 AM
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Originally Posted by Bob Dopolina
It designed for max comfort but puta the pressure in a range that dramatically reduces performance and, in some instances, also reduces puncture resistance.

Tires are designed to work best, in all categories, withing a specific range of pressures. This chart ignores al of that and uses some imaginariry metric without showing why this metric even matters.

The trend away from rock hard 19mm tires is a good one but I think the linked article takes it too far.
Bob, your speling seams to be realee bee goan down the drain.
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Old 01-10-16, 12:01 PM
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Originally Posted by surgeonstone
Bob, your speling seams to be realee bee goan down the drain.
Stupid auto correct as well as trying to post, put my shoes on and hustle the family out the door to brunch.

Stupid auto correct.
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Old 01-11-16, 12:58 PM
  #38  
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As others have said, the pressure listed on the tire is usually the Max pressure.

Most riders don't need the max pressure, and a lot of cyclists are overinflating their tires.

Their are calculators out on the internet that use your weight, your cycle's weight, and the size of the tires to determine an "optimal" air pressure for you. As with many fit calculators, you should probably consider this a starting point, and play around with the pressure to determine your optimal tire pressure.

Tire Pressure Calculator.

GH
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Old 01-12-16, 04:45 PM
  #39  
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Originally Posted by Bob Dopolina
It designed for max comfort but puta the pressure in a range that dramatically reduces performance and, in some instances, also reduces puncture resistance.

Tires are designed to work best, in all categories, withing a specific range of pressures. This chart ignores al of that and uses some imaginariry metric without showing why this metric even matters.

The trend away from rock hard 19mm tires is a good one but I think the linked article takes it too far.
I've been pulling the number off the chart then adding an extra 5-10 lbs and it feels pretty good.
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Old 01-12-16, 04:56 PM
  #40  
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Originally Posted by koolerb
I've been pulling the number off the chart then adding an extra 5-10 lbs and it feels pretty good.
I'm sure it does. As I said, the numbers that chart give will give you a very comfortable ride at the cost of performance and possibly puncture resistance as well.
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