I started using latex tubes one week ago (reasons: rolling resistance and better feeling). Yesterday I measured a pressure loss of around 0.3 bar (~5 psi) in 5 hours. Should I start with a higher pressure so that the average over the ride is close to the optimal pressure? What pressure do you run f…

[image] HLaB: I’d usually pump to 80-90psi Ah, I’m running 70psi on 700x28 tires and butyl tubes on the road. So losing 30psi puts me well below your 50psi threshold (which is about the same for me - 50psi feels squishy, and much less and I snake bite on every bad pothole). Gravel is tubeles…

Ive 700x42mm tubeless on the gravel bike and run them at 25-28psi. I am more particular about topping them up though.

So generations of racers back in the day with their tubulars finished long races with their tires damn near flat? I don’t think that was ever a thing (?) Joe

I have latex on my 64 wheels and race butyl on 36. Pumping latex before every single ride is boring at the very least. Read this test results , on Conti Race28 Light you will lose like 1W. And really, spending for inner tube at the price of decent tire?

Only thing you gotta worry about is pinch flats. Last week while cornering in a race in the middle Of the apex got a snakebite. Must have been going too fast in the corner because vittoria latex tube popped. I’d be careful running low pressure on latex tubes if you’re cornering aggressively. I’m st…

[image] JosephKristian: Must have been going too fast in the corner because vittoria latex tube popped. Does it have to do with speed? Or do you have rim brakes? I regularly go 40-50kmh in tight curves on descents. :face_with_spiral_eyes:

That’s a good question. I can link you to a short video if you’d like to see.

Oh and it was on rimbrakes. Bontranger Aeolus xxx2 internal width 21mm With Vitoria latex tube On Continental gp5k 28mm At 65psi rear

But that shouldn‘t be a problem with disc brakes, am I right? I mean the tube shouldn‘t be stressed any different than usual.

I’m thinking the tire and wheel pinched the tube. Maybe the angle was too severe / psi too low / too much power (lol) That’s why I’m moving towards tubeless. I can run lower pressure and not worry about the tube ever pinching at speed in corner.

Latex tubes: Pressure for longer rides

Equipment

Ken October 12, 2023, 12:10am 35

I run 28mm Conti GP5000s with latex at 65 psi front, 70 psi rear. Never have pinch flatted with latex.

Silca calculator recommends 73/75 psi but the lower tire pressures seem fine to me.

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Latex tubes: Pressure for longer rides

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Latex tubes: Pressure for longer rides

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