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)

 

[Mark_888]

I went crazy and bought Accutire MS 5510B about a year ago (made by same company as yours):
http://accutiregauge.com/racing-gauge/accutire-ms-5510b-racing-tire-pressure-gauge/

The Michelin one you have is also known as the Accutire MS 4751 WC.

 

[scottdk]

I've been using a digital gauge on my vehicles, and it's 10 years old purchased from Walmart for a $6.

Has worked well for a long time, but now the inside of the tip has worn making it harder to get a seal on the tire valve, thus taking longer to get an accurate reading.

 

[TJPark01]

I went crazy and bought Accutire MS 5510B about a year ago (made by same company as yours):
http://accutiregauge.com/racing-gauge/accutire-ms-5510b-racing-tire-pressure-gauge/

The Michelin one you have is also known as the Accutire MS 4751 WC.

I was thinking about getting one of those, especially helpful because of the bleeder valve.

 

[Mark_888]

I was thinking about getting one of those, especially helpful because of the bleeder valve.

Yes, and the bleeder valve works well on mine.

 

[TJPark01]

Yes, and the bleeder valve works well on mine.

In the past month I have flagged down 3 people with dangerously low tire pressures at stop lights. It's amazing to me how much people use and rely on their cars and treat them like rag dolls.

 

[ASHDUMP]

For some reason I keep putting off buying a digital gauge. I purchased the pen style for $1.99 at autozone. It's a guarantee I'm not dead nuts, but I'm in the ballpark.

 

[ctrcbob]

I have a few digital gauges. Probably two or three in each car. One day, I decided to check them against each other, just to compare. Guess what.

They all read the same. I expected some differences, but no, they read the same.
More than I can say about the analog or pen style gauges.

 

[TJPark01]

I have a few digital gauges. Probably two or three in each car. One day, I decided to check them against each other, just to compare. Guess what.

They all read the same. I expected some differences, but no, they read the same.
More than I can say about the analog or pen style gauges.

The important point here, is to have at least two, to check against each other. Last year I was using a dial version, I must have dropped it, cause it was off by 10PSI. Visually the tire looked no different.

 

[Mark_888]

The important point here, is to have at least two, to check against each other. Last year I was using a dial version, I must have dropped it, cause it was off by 10PSI. Visually the tire looked no different.

I had the exact same problem with my years-old Brookstone dial tire gauge. It was very convenient and had a bleeder valve like my new one. I surmised that it was off, but I didn't trust my pencil gauge either. When I tested it against my new digital, the Brookstone was reading 3 PSI higher than actual pressure (which means my tires were 3 PSI under-inflated if I trusted it). At least I now know how far it is off, so I am keeping it in case my digital one breaks.

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[Sayantsi]

I don't need a tire gauge any more - I have an idiot light now!






http://www.autoblog.com/2010/08/04/study-one-third-of-drivers-dont-know-what-this-dashboard-light/