Proper Tire Gauges

[TJPark01]

I recently bot a proper tire gauge and what I discovered was a bit surprising. I just bot a Michelin Digital Tire gauge and it exposed to me the amount of error in my regular analog version. These tests are unscientific, but it's what I have experienced:
Marin of error in PSI +/-:
Michelin Digital Tire Gauge: 0.1 -0.3
Slime Brass Tire Gauge with Bleeder Valve: 0.5 - 1.0
Cheapo Pen Version: 1.0-2.0

Moral of the Story: Considering how import tire pressure is in a car, it's worth spending $20 on a good one. (Especially for guys who are as neuotic as me)

 

[Quattro Pete]

How are you determining what the actual pressure is? You would need that in order to decide which gauge is the closest to actual.

But other than that, even if you're off by 1-2 PSI, I don't think it's a big deal. Nothing bad is going to happen if you're off by this much.

 

[JHZR2]

+1, no such thing as margin of error unless you are 110% positive of the correct value.

Do you mean variance in the measurement (each measurement gives a different value)

I got a made in USA brass gauge from restoration hardware a few years back and have been happy. To me, Im mostly concerned with equal pressures on the axle and consistency. I always air up at least 2 psi over, so if it is off by a bit no big deal...

 

[ryan2022]

I hope not, because mine looks suspiciously close to the one at the bottom.

 

[XS650]

AKA Acutire "MS-4751WC". I have one and it's great gauge.

Measurement-Ltd Inc sells gauges under their in-house brand Acutire and Michelin names.

One of the complaints about that gauge mentioned in reviews was that it always reads 28.1 psi. It does, until you peal the sticker off the face of the gauge.

 

[dparm]

I suggest an Intercomp gauge. They're built really well, are very accurate, and have the bleeder buttons for adjustment.

http://www.intercomp-racing.com/Products/2_DELUXE_60PSI_AIR_PRESSURE_GAUGE_711.cfm


Tire Rack and lots of speed shops carry them for about $40.

 

[Vikas]

Given the choices, I will choose the middle one, a nice analog dial type.