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Old 05-30-2015, 07:43 PM   #1
Nerb OP
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Tubeless tyre pressures

Im sure its here, but you all know the search function is horrible.

How low can you go with tyre pressures on tubeless rims without fear of the bead breaking? Forget about protecting the rim, I just want to know how low I can go in sand.
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Old 05-30-2015, 08:09 PM   #2
PeterW
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Depends on the bike and to a lesser extent the tires.

A pig like a DL 650, 28PSI is as low as I'd normally run on dirt roads. If I knew I was going to be doing a LOT of deep soft sand, I might risk going lower. (But by preference, I'd avoid that bit)

If you aren't worried about rim damage, it comes down to tyres. I've crawled out to somewhere I could fix a leak in comfort with a rear K60 dead flat with no slippage ?. I'd be O.K. with < 20PSI in those if speeds were sane. Those aren't ideal tires for sand though, and I'd be better off with a different tire even at higher pressures.

Just remember that handling goes to hell on the heavy bikes when the pressures are low, if you hit hardpack you'll *still* need to keep the speeds low.


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Old 05-30-2015, 08:20 PM   #3
dualsportride
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If your running the Nuetech system I have seen guys run 5psi.
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Old 05-31-2015, 04:35 AM   #4
trailer Rails
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Quote:
Originally Posted by dualsportride View Post
If your running the Nuetech system I have seen guys run 5psi.
That is what I have, in sloppy conditions, I have run lower. I have a buddy that has that system and runs desert tires at 0psi.
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Old Yesterday, 03:47 AM   #5
75bronco
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If you have a tire with a rigid side wall like some motocross tires have, you can run extremely low pressures. If you have a flexible side wall, like trials tires, you must maintain some pressure to avoid rim damage. I routinely run 6psi with my nuetech tubliss.
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Old Yesterday, 06:08 AM   #6
LittleRedToyota
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Quote:
Originally Posted by Nerb View Post
Im sure its here, but you all know the search function is horrible.

How low can you go with tyre pressures on tubeless rims without fear of the bead breaking? Forget about protecting the rim, I just want to know how low I can go in sand.
0 psi.

i know several guys who don't put any air in their rear tire with the tubliss system.
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Old Yesterday, 08:15 PM   #7
Ironwood
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I think he was asking about tubeless dualsport tires, not Nuetech.

What you need to watch for is breaking the bead and losing all your air. It will depend upon your tire and rim selection. I wouldn't go much below 12 psi.
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Old Yesterday, 08:43 PM   #8
Nerb OP
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Thanks guys. Im running the E-09 Dakars, which do have pretty stiff side walls, but the 1190 is a monster bike... and its loaded. With over a thousand sand dunes to cross this week, I want to let them down as much as possible. I have run 20psi before, but I might try 15 or 16 this time.
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