Tubeless pressure?
08-27-23, 08:29 PM
#1
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Tubeless pressure?
The PSI on the sidewalls says 60-80, but that's with tubes. I'm a fatty so I want to keep the pressure up a little so I don't wreck the rims. Is it OK to run 60PSI? What is the lowest that you guys would recommend for my 240# weight?
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08-27-23, 08:43 PM
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What size wheell and what size tire? Can’t say anything without that info.
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08-27-23, 09:28 PM
#3
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700x38ish
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08-27-23, 10:10 PM
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08-27-23, 10:49 PM
#6
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I’m the same weight, maybe 5lbs more, and on my 700x35 I run 50-52/53-55psi f/r.
I’d definitely 2nd the suggestion to hit up a calculator, specifically the Silca online calculator, and start with those recommended pressures. Off the top of my head I’d guess you could easily start at 47/50 f/r, but playing with the road surface and bike settings on the Silca site would be better than benchmarking off my peculiarities.
https://silca.cc/pages/sppc-form
I’d definitely 2nd the suggestion to hit up a calculator, specifically the Silca online calculator, and start with those recommended pressures. Off the top of my head I’d guess you could easily start at 47/50 f/r, but playing with the road surface and bike settings on the Silca site would be better than benchmarking off my peculiarities.
https://silca.cc/pages/sppc-form
08-28-23, 05:58 AM
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38mm tires @ 60 psi sounds good for 240 lb rider - tubed
tubeless ? I dunno (should have paid attention to ‘tubeless’ before post ughhh)
check the rear tire (sidewall) as you ride - there might still be a fair amount of deflection (even at 55-60 psi) ?
tubeless ? I dunno (should have paid attention to ‘tubeless’ before post ughhh)
check the rear tire (sidewall) as you ride - there might still be a fair amount of deflection (even at 55-60 psi) ?
Last edited by t2p; 08-28-23 at 06:09 AM.
08-28-23, 07:37 AM
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That Silca calculator claims the OP should be at 42.5f/44.5r for psi, yet I am 20# lighter and the Silca calculator claims I should be at 42f/43.5r.
- There is 0 chance that I ever care so much about PSI that I sit there and set it to .5 increments.
- There is 0 chance that my high quality pump is accurate to .5psi.
- The Silca calculator claims I should run my 43mm tires at 34f/35.5r, yet that makes for a ride that feels vague and sluggish. It simply isnt fun with tire psi that low. So I run it 10psi higher- 43ish f and 45r. The ride is still plenty soft on gravel for comfort while not feeling wobbly and vague due to lower than preferred psi.
08-28-23, 01:01 PM
#9
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08-28-23, 01:25 PM
#10
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it's the ish width. 40ish sounds right it just sat a while since I used it and wanted to get a rough ides. It was fine. Thanks guys!!
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08-28-23, 03:07 PM
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I run my 38mm tire at 40 psi. Seems fine. I'm not quite as heavy as OP though.
08-28-23, 08:24 PM
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This tyre pressure calculator will give you a good starting guide - https://silca.cc/en-au/pages/sppc-form
