I have a 2016 Grand Cherokee Summit. The tag on the door says to set the front tire pressure to 33 and the rear to 36. When I bought it all were set to 39-40 psi. So I finally got around to adjusting the pressure.

I talked to a guy at the tire shop who told me to set the pressure when the tires were cold, like in the morning before I drive. So, I went to adjust the pressure. But after I make an adjustment, it takes about 2-5 minutes for the display to see the change. And of course, I add a little too much, make an adjustment and wait 5 more minutes and now I let out too much. And that's just one tire.

It's very hard to get the display to read 33, 33, 36, 36. So, I guess my question is, what do you guys do?

PS: I am an engineer, so I want everything orgianized and logical. So this drives me a little bit crazy. I am guessing I should just be happy if I get 32, 34, 35, 37..