I have some eBay $20 deflators (set of 4) that I screw onto each tire and they stop at a predetermined setting. I wheeled with a guy that used a stem puller and he was done with all four of his before one of mine was down to 12psi. I now have a stem puller. And btw, I went to Teraflex before I bought mine from eBay and all they had was some $60 ones. The $15 ones don't stop at a predetermined setting. Buy a stem puller and a $2 tire gauge from the auto parts store. Just my $0.02. Or you can buy my deflators for $10.
Marcus | UJC #158 | 2017 JKUR