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Discussion Starter · #1 ·
I'm used to running 32-36psi in my 26" UST tubeless, now with the 29" Bontrager ACX 2.2 tires and tubes where should the tire pressure be?

I'm about 190 lbs rider weight. I figure somewhere around 40-45 psi on the 29" set-up. Hmmm?
 

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tphenom said:
I'm used to running 32-36psi in my 26" UST tubeless, now with the 29" Bontrager ACX 2.2 tires and tubes where should the tire pressure be?

I'm about 190 lbs rider weight. I figure somewhere around 40-45 psi on the 29" set-up. Hmmm?
I'm heavier than you and run less pressure than that when running 2.2 ACX's.

If you describe your bike set up, riding style and what the trails you ride are like I'd be willing to give you what my starting point pressures would be.

29erchico
 

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Discussion Starter · #4 ·
I've got a GF Rig singlespeed which, of course, is a hardtail and I ride it on less challenging trails than my geared hardtail and geared Ellsworth Isis. Still, I ride for the ascents, the rolling singletracks and the somewhat technical trail. I don't hit stuff hard or jump obstacles.

I'm running 35 psi now and feel I can go a bit lower.
 

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tphenom said:
I've got a GF Rig singlespeed which, of course, is a hardtail and I ride it on less challenging trails than my geared hardtail and geared Ellsworth Isis. Still, I ride for the ascents, the rolling singletracks and the somewhat technical trail. I don't hit stuff hard or jump obstacles.

I'm running 35 psi now and feel I can go a bit lower.
In full riding trim (camelbak, tools, spare tube, etc) I push 280 lbs. I ride WTB Exxiwolfes w/tubes, and I ride at 35 psi on sand, rock, and hardpack too (but could go up on hardpack). No snakebit tubes to-date, so I figure you should be able to drop considerably if you wish to soften up the tail of that bike or just get better traction in the soft stuff.
 

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tphenom said:
I've got a GF Rig singlespeed which, of course, is a hardtail and I ride it on less challenging trails than my geared hardtail and geared Ellsworth Isis. Still, I ride for the ascents, the rolling singletracks and the somewhat technical trail. I don't hit stuff hard or jump obstacles.

I'm running 35 psi now and feel I can go a bit lower.
You are in the ballpark. I always run the front 2-4psi lower than the rear. See if that works for you.

29erchico
 

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same weight, same bike

I also ride a GF Rig at about 190 lbs. I use the split tube tubeless method and run 28 psi rear
and 24 in the front.
 
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