I know guys here that run tubliss in knobbies with pretty low psi. 8 in the rear and 6-7 up front. I'm not sold on the tubliss. I run knobbies/HD tubes and depending on terrain run as low as 12 (low speed single track) and as high as 15 (rocks and high speed).
I was on the wall my self. I went back and forth on the the three major tubeless systems: The Bib, The Balls and the Trubliss systems. I chose the Trubliss system for a few reasons
1. Its the only tubeless system that lets you adjust pressures quickly, with both the bib and balls you're stuck with what you get.
2. It locks the tire on to the rim over the entire circumference of the of the wheel
3. Allows for run flats
4. Doesn't lose its effectiveness over time as the Balls and Bib does
5. No Speed limit, The balls and bib heat up over time athigh speed
6. Quick easy flat repair on the trail
7. 100% eliminates pinch flats. The bibs and balls also do this
8. Cheaper then the bib and balls by about 30-40%
It does have two disadvantages; I'm sure there are more but these are the two I can think of.
1. Major learning curve to get on the first time. especially with trials tires. We stalled the tire machine at Discount trying to get the front on. In the end took 2 guys a heat gun and the longest tire bars I could find to get it on.
2. Softer tires are more prone to poking flats.
I also ran HD tubes, they worked well, However at lower pressures they can still be subject to pinch flats are a major pain in the but on the trail if they do pop.
it really depends on what, where and how you ride.
Edited by MrDieselTwitch, November 02, 2013 - 09:26 AM.