TPMS vs. tire guage

280z/300zx

I was just curious, whats more accurate the TPMS or your average tire pressure gauge? I have a 2010 Camaro SS which gives the actual numbers at each corner. The gauge I have seems to read about 4-5psi lower than what the TPMS states. Being that the 370z doesn't give a reading and my 280z and 300zx are too old to even have TPMS I'm just wondering which I should go off? I recently filled the tires on my 370z to the gauges measured 35psi but if it's actually off by 4-5psi then that possibly means I filled my tires to 39-40psi which would be too much. I know most just pick a gauge and stick with it but when you have a car that gives the reading do you go by the gauge or the car? Thanks for the help

Mike

If I had a discrepancy that large, I would try a couple of different gauges and see where the anomaly is.

__________________
NISSAN: 75 280Z / 86 300ZX GLL /87 Sentra SE / 03 350Z / 23 Z
Porsche: 93 968 / 23 Macan GTS / 93 968

sboden

Did you use a digital tire gauge? Mine was within 1 pound of my wife's car tpms reading and also within 1 pound of my motorcycle tpms reading. Yes my C14 has tpms and it saved me one time.

__________________
09 Monterey Blue 370Z Sport/Tour, Takeda Shorties, Blk Nismo Wheels, Blk Painted Top/Exhaust cut out, Invidia Gemini CBE, Southbend Stage 2 clutch, Lite weight flywheel, Zspeed HD CSC, flat black headlights. Previously owned 03 G35 Coupe 6MT and Volvo C30 R Design.

ZeeingAround

I have one like this:
VIAIR 2" Tire Gauges - VIAIR Tire Gauges Reviews

But it is made by Bluepoint (snap-ON) and is encased in rubber. It is compact and never let me down.

I am curious to see how good this one is:
TPGDL150, Gauge, Tire Pressure, Digital, Backlit, Blue-Point

__________________
Get some roosters for eggs and Bulls for milk . Then you will see that gender matters. Especially at milking time.

sboden

Either of those are the types of tire gauges people should be buying as they are more accurate than a standard cheap gauge.

__________________
09 Monterey Blue 370Z Sport/Tour, Takeda Shorties, Blk Nismo Wheels, Blk Painted Top/Exhaust cut out, Invidia Gemini CBE, Southbend Stage 2 clutch, Lite weight flywheel, Zspeed HD CSC, flat black headlights. Previously owned 03 G35 Coupe 6MT and Volvo C30 R Design.

kenchan

been using this one for a couple of years. i bought 2 and both are within 0.1psi of each other and within 0.2psi of another analog guage i have so i consider these pretty accurate.

Amazon.com: Accutire MS-5510B Racing Tire Gauge: Automotive