Jo asked ... How to engage clutch on old sewing machine to engage needle?    |    Jacky asked ... Miele Vacuum cleaner?    |    Ben asked ... Toyota Yaris French or Japanese?    |    Andy asked ... How can I mend my MacAlistair 450w hedge trimmer?    |    Felix asked ... Hitachi vt-m70em?    |    Click here to ask your question

tyre pressure for speedfight 2 100cc?

With regard to the tyre pressure for the speedfight2 100cc.
In the answer kindly given,front 28/back32 (psi).Could you please tell me what does the (psi)stand for as I am new to all of this!

thanks.
paul, July 2009
Pounds per Square Inch.

Fat controller, July 2009
link Click here to see other fixes for Speedfight 2.