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After running tubeless on the mountain bike for what feels like forever, yesterday's puncture on the gravel bike was a surprise.
I've got 32c Gravel kings on Shimano RX830 wheels at 95psi (it's a very road focused gravel bike), my understanding is this combo won't go tubeless so what are my options?
32s at 95psi!
Seemed to work perfectly well, I'd noticed they felt a bit soft yesterday but thought I'd try lower pressures and ended up with a snakebite.
If you have to run your tubes at 95psi to avoid snakebites that's not a reason to stay with 95psi after you go tubeless...
Stuff me that's a high pressure. 60-70psi should be enough. I only put 70psi in 35mm tyres when fully loaded for touring with panniers and a trailer on. And I'm a big old lump as well! 🙂
Schwalbe G-ones for me, I have a set of Hunt wheels which are tubeless specific but am thinking of using the hunts on my road bike as that will be running at higher pressures and trying the G-ones which are tubeless on a non tubeless 3T rim.
What makes you think that the RX830's and the 32mm Gravel Kings won't work tubeless? I've got the 32mm Gravel King SK's and they work tubeless perfectly; my understanding is that pretty much all of the larger Gravel King tyres are tubeless whether stated or not.
Hang on... Aren't all the 32mm versions the SK? If so I can't see why it should be work as the RX830 is a tubeless wheelset.
And I run at about half that pressure and I'm 90kg plus!
I thought I'd read somewhere that they'd only go up to 60psi tubeless.
I like the feel of the high pressure and as I say it's used mainly on the road so I've no real reason for low pressure.
If you like the feel of high pressure, then use narrower tyres. FWIW I run tubeless 25c Pro Ones at 80psi, and they have superb ride quality.
You need to relearn rolling resistance. Things have moved on grandad.
Tubeless GK slicks here, run at 65psi tops and I'm 75kg.
There's no benefit from running such high pressures - it simply gives you a harsher ride and more likely to suffer a pierce-puncture because the tyre can't deflect / it's more highly-stressed. Lack of tyre carcass flexibility also means poorer handling.
Vittora do some new gravel orientated / fast cross tyres.
FWIW I run my 33mm XG Pros's at 40/45 psi for general riding and down to sub 30psi for racing on Stans Grail rims
Maybe I'll give this lower pressures business a second try.
Any recommendations for long tubeless valves?
Running 32c Maxxis Re-fuses's at 75 PSI tubeless, seems to work well so far.
I'm a big old unit so I like to run my pressures on the higher side.
Oops, double post
how heavy are you? If that's not too personal!? bit tricky to judge without that info. 95psi is high, but might not be quite as mental as some 10 stone whippets might think.
I put 70 and 80 in my 28c tyres. Wide touring rims, occasional off-roading and 11 stone.
13 stone / 85kg
I'm a manly 19 stone.
They're on DT Swiss R 511's with DT tubeless tape and milKit valves. I used gorilla tape initially but this didn't seem to hold the air well at high pressure, switching to the proper tape solved it.
My 'road' bike also has 28 c tubeless jobbies running at 90 PSI, no problems there either *touch wood*
I love tubeless me.
Any recommendations for long tubeless valves?
milKit
+1
What Simon said
Since you are mostly road riding, get some G-One Speeds (30c) and run them at 75/80 PSI F/R). Fantastic tyres. I run mine on ksyrium 19 mm non-tubeless rims.
Just as a follow-up, been running 60psi tubeless and more than happy with the results. Might even drop it a bit lower.
I like the feel of the high pressure and as I say it's used mainly on the road so I've no real reason for low pressure.
The maximum reaction force of the tyre is going to be roughly proportional to width squared x pressure, so your 32c's at 95psi are going to be roughly twice as hard as 23c's at the same pressure.
In other words, as you've found, you were doing the whole 'big tyre's are comfortable and faster' wrong and around half the pressure should feel about the same as supple as 23c tyres at 95psi.