Tire Pressure Gauges - Analog Vs. Digital
The purpose of my inquiry, after two months of experience with two digital tire gauges, is not to find out which brands of gauge are better than others, but rather, to find out which type(dial face vs digital) you feel:
- Consistently gives the same result over and over again.
- Has the best absolute accuracy(against a known reference gauge)
One of my two digital models, a DIYCO Pro, takes 3-5sec. to reach a reading. After dumping it(releasing the air from it when it is removed from a tire), and valving that same tire again two or three more times, I get different readings as much as 2psi apart. IE: first read: 33.5psi, second read, 32.9, third read, 33.2, etc.
If I set all my car's tires to exactly 33.0psi, how do I know all four are really exactly 33.0psi(according to a theoretical reference gauge)?
With dials, If I keep taking readings, the indicated pressure goes down just a hair with each successive reading, but, I get a reading right away, and bleeding down is fast and no nonsense compared to the digitals, which "slowly climb back"from a bleed: 32.8...32.9.........? .....33.0! Whew, finally!
Which do you prefer: Decimal precision of a digital tire gauge that you must wait a few seconds for, or, no- nonsense, quick reading of an analog? And is either really any better?