i have a 2.5 x 20 inch tyre and was wonderin what the ideal pressure is for trials? would i need to lower it for big drops?
jack
trials pressure
Big drops/gaps require a higher pressure so you don’t bottom out your tyre and hammer the rim through you’re tube.
Although, softer tyre pressure means it’s easier to learn to hop, and a cooshier feel.
You’ll know when it’s time to increase the tire pressure as you start to bottom out the tire hopping and doing stuff.
Perth is right. I try to find a happy medium where I don’t bottom out my rim or have the tye fold to the side easily, but soft enough to hop comfortably with. I just pump the tyre up fairly hard and play around then let a bit of air out and so on and so forth until you’re happy. I call it trials and error! You see what I did there?! Ha ha! 
yip i see wot u have done there, how droll. So would u class 40psi as soft or hard then?
Force over area means that the pressure for one size tire is different fro another. Example: I have a 24 inch tire and it says 40 psi reccomended. Your 20 may say something else, and his 29 will be much higher.
Re: tyre pressure
On Sun, 23 May 2004 15:25:16 -0500, “PopeSamXVI” wrote:
>Force over area means that the pressure for one size tire is different
>fro another. Example: I have a 24 inch tire and it says 40 psi
>reccomended. Your 20 may say something else, and his 29 will be much
>higher.
Generally, tyre pressure has more to do with tyre width than with tyre
(+wheel) diameter. Wider tyres allow lower pressures.
Klaas Bil - Newsgroup Addict
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