Tubeless PSI?
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Tubeless PSI?
I've been experimenting with my 25 mm Mavic USTs. I weigh 185 lbs and have been running 80 psi (rear) and 70 psi (front). Just wondering what others are doing and if there's some "scientific" way of finding your optimal psi. Talking about road bike for recreational rides.
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Science involves experimentation. So experiment and see what works best for you. Noting your perceived effort for rides you do and what tire pressures you used is one simple scientific way to go.
Just keep the same tire pressure for six rides and record how you felt both energy wise and comfort wise. Then change the tire pressure and do six more, and repeat till you have an answer tailored to you.
Just keep the same tire pressure for six rides and record how you felt both energy wise and comfort wise. Then change the tire pressure and do six more, and repeat till you have an answer tailored to you.
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Sure, there's a scientific way of finding it, but very few of us (with the exception of guys like RChung) are equipped to do so and it's going to change depending upon the conditions. There are various calculators online now, like the new one from Zipp (https://axs.sram.com/tirepressureguide), but those just get you in the right area, it's still up to you to tweak based on conditions and preferences.
If you really want more info, there's a good Cycling Tips Podcast about tire width and pressure (https://cyclingtips.com/2016/08/cycl...and-pressures/) from a few years back. It's about an hour, though, so those with ADHD need not apply.
If you really want more info, there's a good Cycling Tips Podcast about tire width and pressure (https://cyclingtips.com/2016/08/cycl...and-pressures/) from a few years back. It's about an hour, though, so those with ADHD need not apply.
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Science involves experimentation. So experiment and see what works best for you. Noting your perceived effort for rides you do and what tire pressures you used is one simple scientific way to go.
Just keep the same tire pressure for six rides and record how you felt both energy wise and comfort wise. Then change the tire pressure and do six more, and repeat till you have an answer tailored to you.
Just keep the same tire pressure for six rides and record how you felt both energy wise and comfort wise. Then change the tire pressure and do six more, and repeat till you have an answer tailored to you.
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There are various calculators online now, like the new one from Zipp (https://axs.sram.com/tirepressureguide)
I can see taking their suggestion, rounding it up to the next 5 or 10, and then let some air out on the first ride until it feels right.
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Oops. I rechecked and there was an error in one of the values used. It's a lot closer to what I'm currently using.
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Don't be so caught up in charts and formulas that you don't try higher or lower pressures yourself. They don't know what your riding conditions are like. Nor do that know exactly what you consider comfort.
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As I have said, that's exactly what I have been doing. I just thought there might be other ways to calculate an approximate value.
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SILCA TIRE PRESSURE CALCULATOR
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I've been experimenting with my 25 mm Mavic USTs. I weigh 185 lbs and have been running 80 psi (rear) and 70 psi (front). Just wondering what others are doing and if there's some "scientific" way of finding your optimal psi. Talking about road bike for recreational rides.
Ultimately, though, if its just for pleasure (i.e., you aren't trying to squeeze every single watt out of your bike), then ride what's comfortable! No need for more qualification than that.
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#12
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I've been experimenting with my 25 mm Mavic USTs. I weigh 185 lbs and have been running 80 psi (rear) and 70 psi (front). Just wondering what others are doing and if there's some "scientific" way of finding your optimal psi. Talking about road bike for recreational rides.
Goes without saying though, you need to make sure your pump gauge is accurate. Most aren't in my experience.
https://info.silca.cc/silca-professi...ure-calculator
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Sure, there's a scientific way of finding it, but very few of us (with the exception of guys like RChung) are equipped to do so and it's going to change depending upon the conditions. There are various calculators online now, like the new one from Zipp (https://axs.sram.com/tirepressureguide), but those just get you in the right area, it's still up to you to tweak based on conditions and preferences.
.
.
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Goes without saying though, you need to make sure your pump gauge is accurate. Most aren't in my experience.
https://info.silca.cc/silca-professi...ure-calculator
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FWIW, I have a ridiculous number of pumps (don't ask) and when I checked them against each other, there was nothing resembling consistency although most pumps generally seem to be repeatable even if their gauge is wildly off. What that means, of course, is if you take your favorite setting and borrow a friend's pump at the start of the ride, there is no guarantee that you're even close to the pressure you read off your pump.
J.