You need to know that not all low air pressure gauges read exactly the same so use your gauge only(do NOT LOAN it out either ) and experiment with the air pressure in 1/4 to 1/2 lbs. increments to find what works best on your car at your track
I have three good low pressure gauges and none of them read exactly the same on the same tire I had to learn the hard way about not lending out my low pressure tires gauges out at the race, twice
Dang Murphy anyways