Originally Posted by Duner733
I am all over the place on this one. My tire and RV are rates for 65psi.
I have two air compressors that claim I only have about 51psi.
I have a battery operated tire gauges that agrees with this.
The tire pressure caps are rated for 65psi and are green as in ok.
I have a manual tire gauge that agrees with the low 50lbs psi.
Does anyone know if there is a range on these caps before they show low?
I am guessing I need to add some air as the majority of my gauges claim it is low.
Any other suggestions as I am heading out early tomorrow?
Those tire pressure indicating caps are notoriously inaccurate. If all your regular tire pressure gauges and compressor gauges agree with each other the message should be clear, the pressure indicating caps are wrong.
Inflate to the desired pressure using one of the 'good' gauges when tires haven't been driven on for several hours and forget the indicator caps.
They'll do a good job of keeping the dirt out of the stem but that's about it.