[froven]

I wondered how accurate built in pressure readings are. I was having trouble getting pressure settled at recommended so bought a cheap gauge. Ignore gauge and go with displayed pressure(2014)? Hand held gauge reading 3 psi less all around. This whole process started because dealer suggested 38/42 instead of 33/38. VW says no way. I have gone so far as to buy a highly rated gauge to see if any difference. Does built in gauge ever need re-calibrating?

 

[Jimbuffalo]

I have a nice gauge and it is spot on with the MFI readings.

I run mine 36 and 41

 

[Oregon TDI]

I've found the Touareg TPMS sensors agree within about 0.5 psi with my Moroso dial-type gauge. Very accurate.

I use the numbers the TPMS display recommends. which should agree with the label on the driver-side door jamb.

 

[BenTDI]

I've been running 39/41 and the MFD agrees.

This past winter, when the fronts got down to 34/35, it felt like the steering was a LOT less sharp, I prefer the 39/41.

 

[bobbydigitali]

My digital handheld gauge reads 2 psi over what the MFD says on all tires. Is there a way to reset/re-calibrate the TPMS and MFD readings?

 

[Black Grouse]

My digital handheld gauge reads 2 psi over what the MFD says on all tires. Is there a way to reset/re-calibrate the TPMS and MFD readings?

It may be your handheld digital gauge that's reading high - just get used to that difference.

 

[FSJ Guy]

The person with two watches is never sure....

;- )

I wouldn't sweat it.

 

[BeemerMikeTX]

My digital handheld gauge reads 2 psi over what the MFD says on all tires. Is there a way to reset/re-calibrate the TPMS and MFD readings?

My $15 Accutire digital gauges match my TPMS within the 0.5 precision of the digital gauges. I periodically compare all the digital gauges to each other, and if I get an outlier it goes in the trash.

 

[Mike's Panzer]

Your hand held gauge will not be as accurate. These sensors are tested and held to very high standards. Top gauges at auto parts stores will vary 2 pounds when new. They get less accurate with use. Water vapor in the air, salt and sand from the road, and handling all take a toll. A lot of mechanics still have their gauge from votech school. Might as well thump them like truck drivers.

 

[tmann45]

The person with two watches is never sure.... ;- ) I wouldn't sweat it.

unless they are cesium atomic watches.

 

[FSJ Guy]

unless they are cesium atomic watches.

But it's hard to trust those people from Boulder, Colorado. :- p

 

[BeemerMikeTX]

But it's hard to trust those people from Boulder, Colorado. :- p

I hear the pressure gauges in Colorado read high.