Re:

[Graham Singleton <grasingleton@avnet.co.uk>]

>  I have no idea if low pressure
>does make a tyre prone to puncture but its worth checking the pressures in
>any case.
>Jerry

You're right agin Jerry. It does. If the pressure is low and someone uses 
hard braking the tyre may slip on the rim and drag the inner tube round, 
either wearing it or pulling the valve out.
IMHO of course
Graham