29" Tubeless - Pressure

[Mutt]

I have been trying to figure out what the pressure range is for tubeless tyres on a 29er. I tried searching this here site with no success.

 

 

 

Anyone got any guidelines for me?

[Thug]

I run between 1.5 - 1.8 on my rigid SS, whilst between 1.8 - 2.0 on my Scandal. The Thug2010-01-29 07:09:44

[Mutt]

1.8 to 2.0 bar that is low - i've currently got 2.5 to 3 bar in the tyres. Now see why i'm asking ?

 

 

[Jules]

It's got more to do with tyre size than wheels. Thug's got fat tyres on his SS which allow him to run the low pressure.

 

 

 

As a rule of thumb, if you're riding offroad you want to go as low as possible, but not have the sidewalls crumbling while cornering, and not having rocks hit your rims when you ride over them. The best way to discover this pressure is by trial and error.

[Mutt]

I have Bontrager 2.2 X 29" if that helps. So I reckon if I start at 2ish and see how it feels and what happens with the sidewalls. i can add or remove pressure and experiment.

[Thug]

With the bigger 29" tyre, you can go quite a bit lower than a 26" tyre because of the higher volume displaced by the tread.

 

 

 

On the Schwalbe website there is a pdf of a study done that proves lower pressures result in less rolling resistance.

 

 

 

As Jules says, its a personal preference discovered by trial and error.

[Jules]

I have Bontrager 2.2 X 29" if that helps. So I reckon if I start at 2ish and see how it feels and what happens with the sidewalls. i can add or remove pressure and experiment.

 

 

 

I reckon 2 or below for those tyres, unless you weigh a tonne

[Mutt]

Weigh a ton I do not!

 

 

 

Thug - I did read that article a while back.

 

 

 

Thanks for the advice.