itp sandstars

just got new set of itp sandstars on itp ss112 wheels for my trip to silver lake michigan, i got them mounted and balanced from the company i ordered from... was gonna check the air pressure on them before i put them on my 400ex and it said to run at very low pressure... does anyone now what range i should consider very low, this is my first set of paddles so im new to this?? thanks for any advice