[BMW11]

Does anyone know an accurate tire air pressure gauge that you can recommend? Thank you.

[adzam]

I love my Longacre liquid filled glow in the dark gauge... Bought it a few years back for autocross/track use and it's never let me down:

http://www.longacreracing.com/produc...GID+Tire+Gauge

[wwmiller3]

I second the recommendation for this one. I have been using it for years without issue.

Originally Posted by adzam

I love my Longacre liquid filled glow in the dark gauge... Bought it a few years back for autocross/track use and it's never let me down:

http://www.longacreracing.com/produc...GID+Tire+Gauge

[BMW11]

thank you for the recommendations

[bimmer456]

The i drive will give you the tire pressure.

[rlmesq]

I've used Accutire gauges for years for my motorcycles at the track, where a couple of PSI can make a huge difference. Their current digital gauge is outstanding: more accurate and durable than a dial gauge.

https://www.accutiregauge.com/racing...ressure-gauge/

[RPM90]

I have a analog style gauge with a long braided air line, and a bleeder valve. It was a highly recommended gauge when I bought it about 10 years ago.

It is covered in a thick rubber cover. But, I have dropped it a couple of times over the years, and even with the cover it seems it's accuracy may not be there.

I don't know how accurate our TPMS system is so I can't know for sure if my handheld gauge is way off or if the 340i's TMPS is way off. The difference between the two is between 4-5psi, which is significant. These readings were taken on cold tires on a couple of occasions with different ambient temps.
The difference in psi was the same every time I tested and adjusted tire pressure.

On my last adjustment I used the reading from my analog gauge, but I'm not convinced that was the right decision.

So, I've been looking for a new gauge. I was going to get another analog gauge with a hose and bleeder valve. I've been doing more reading on gauges and found some good articles. Interestingly, I'm reading a lot more information from actual testing that states that good digital gauges are accurate, and definitely more sturdy in that they can take bumps and falls and not suffer much decrease in accuracy. Analog gauges are still held in high regard, but their accuracy overall is a bit lower, and the worst part is that they are highly susceptible to losing accuracy even after just one fall on a hard surface.
This could explain the big difference between my analog gauge and my cars TPMS reading.

At this point I don't know which to trust, the gauge or the TPMS.
I'm leaning towards a digital gauge with a hose and bleeder valve.
I found a digital gauge that seems to have what I want. It's a DIYCO brand around $25 on Amazon. The Accutire MS-5510B also looks good, at bit higher cost at about $37.

Oddly one the highest rated gauges for accuracy is an Accutire MS-4021-B at around $12, and that gauge has been around a long time. Another highly rated for accuracy is Accutire MS-4350B at around $15.

I haven't found a lot of information regarding accuracy about the Diyco or Accutire digital gauges with hose and bleeder valve.
I may go with the Diyco and give it a shot. At $25 it's not a big cost, and then I'll have 3 gauges to compare.

Anyone else with a good or great gauge please post.

[JimBean2014]

I use tekton and it seems to be showing accurate reading so far

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1