Tire Pressure Reading - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

ElderJ · 01-26-2021, 12:10 PM

Not sure if this is considered Mechanical or not, so I'll try my hand in the General forum.

How reliable are the electronic TPM sensors?

I'm accustomed to checking my tires with pencil gauges, but they are hit and miss with some of their readings, and I figured if the car is doing the work for me, then why bother.

Mr_Draco · 01-26-2021, 12:27 PM

Mine normally are within 2-3 psi of what my gauge says when I check them. Sometimes the car is higher, sometimes lower. I wouldn't rely on them to get an accurate reading of exact psi, just use them as a quick reference of if they need air or if you have a flat.

TheFlyingBananaSS · 01-26-2021, 12:50 PM

I use an analog gauge for mine. Mine is usually within 1psi of the tpms when cold.

ZED SLED · 01-26-2021, 12:57 PM

TPMS on all my vehicles typically read about 2 psi less than any of my actual gauges

1JEWLDSSRS · 01-26-2021, 02:37 PM

Same here, I just installed new TPMS's, old ones lasted 10yrs, and the dash readout is within 2 psi of what my dial gauge would read at the tire when warmed up or cold.

ElderJ · 01-26-2021, 08:25 PM

Thanks fellas

Moto-Mojo · 01-26-2021, 08:50 PM

I too found the TPMS sensors pretty close to the 'analog' gauge.

LimaCharlie · 01-27-2021, 07:13 PM

Quote:

Originally Posted by ZED SLED

TPMS on all my vehicles typically read about 2 psi less than any of my actual gauges

Same here. I notice the same thing.
I think the TPMS sensors are actually designed to show less than actual pressure. This will trigger a low pressure warning well before the ACTUAL tire pressure is dangerously low.

supersnake05 · 01-27-2021, 07:23 PM

Toyotas have a low pressure threshold set around 27.5 psi to set tire light. They are pretty close to car and my digital gauge at work. I wouldn't say set lower cause then tires would be over inflated a bit going off car gauges.

BuddyLee · 01-27-2021, 08:03 PM

The right front reads 24 on the dash but 42 with a TPG.

ChibiBlackSheep · 01-28-2021, 08:21 AM

Quote:

Originally Posted by BuddyLee

The right front reads 24 on the dash but 42 with a TPG.

Do all of your tires read correct? They weren't rotated and never paired were they?

ariZona28 · 01-28-2021, 09:01 AM

Quote:

Originally Posted by BuddyLee

The right front reads 24 on the dash but 42 with a TPG.

I would think that 24 on the dash would give you a warning. May want to do the "re-learn" procedure. My '15s require a special tool. Not sure about your '13.

TheFlyingBananaSS · 01-28-2021, 09:04 AM

13 needs the tool too. $15 on ebay

BuddyLee · 01-28-2021, 09:34 AM

Quote:

Originally Posted by ChibiBlackSheep

Do all of your tires read correct? They weren't rotated and never paired were they?

As you know a complete rotate would not work but a left to right swap would be a good idea. This will be a project for this weekend. Thanks for the tip.

01-26-2021, 12:10 PM	#1
ElderJ Drives: 2014 Camaro 1LT Join Date: Aug 2019 Location: Central Florida Posts: 372	Tire Pressure Reading Not sure if this is considered Mechanical or not, so I'll try my hand in the General forum. How reliable are the electronic TPM sensors? I'm accustomed to checking my tires with pencil gauges, but they are hit and miss with some of their readings, and I figured if the car is doing the work for me, then why bother.

01-26-2021, 12:50 PM	#3
TheFlyingBananaSS Evil Genius of Chevrolet Drives: 2017 Z06, 2019 XTS, 2013 SS Join Date: Feb 2017 Location: New York Posts: 3,260	I use an analog gauge for mine. Mine is usually within 1psi of the tpms when cold. __________________ GPI SS2 VVT cam, ECS Novi 1500 supercharger, Corsa Extreme, Detroit Speed and BMR suspension, Circle D triple disc, Melling oil pump, LS2 chain tensioner, ATI 10% UD, DSX E85 kit, High Energy coils, BTR springs, LS2 Lifter trays, Titanium retainers, hardened push rods, FIC 1000 injectors, ZL1 pump, Mighty Mouse catch can, AEM gauges, Tial BOV, Richmond 3.91 gears, Custom gauge bezels, Speed Engineering headers, Stainless Works HF cats, DSX Aux pump, 710rwhp on E85.

01-26-2021, 12:57 PM	#4
ZED SLED Drives: 2017 Mosaic Bk ZL1 M6 Join Date: Jul 2009 Location: South of Raleigh, NC Posts: 9,477 View My Garage	TPMS on all my vehicles typically read about 2 psi less than any of my actual gauges __________________

01-26-2021, 02:37 PM	#5
1JEWLDSSRS Drives: 2011 SS-RS Join Date: May 2011 Location: FLORIDA Posts: 11,435	Same here, I just installed new TPMS's, old ones lasted 10yrs, and the dash readout is within 2 psi of what my dial gauge would read at the tire when warmed up or cold. __________________ TSP STAGE 3 CAM,231/246 @112 LSA 614/641 LIFT, CIRCLE D 5C-4200-4500 CONVERTER,LOD INTAKE.CORSA EXHAUST. DSS 1 PC DS. PEGASUS SOLID CRADLE MOUNTS. 486RWHP/475RWTQ.LOTS MORE.

01-26-2021, 08:50 PM	#7
Moto-Mojo Fast Cars and Old Guitars Drives: 2015 2SS RS (L99, baby!) Join Date: Apr 2012 Location: N. CA Posts: 3,973	I too found the TPMS sensors pretty close to the 'analog' gauge. __________________ “I don’t want to belong to any club that would have me as a member.” - Groucho Marx

01-26-2021, 12:27 PM	#2
Mr_Draco Drives: 2SS/RS Join Date: Sep 2008 Location: Western North Carolina Posts: 7,182	Mine normally are within 2-3 psi of what my gauge says when I check them. Sometimes the car is higher, sometimes lower. I wouldn't rely on them to get an accurate reading of exact psi, just use them as a quick reference of if they need air or if you have a flat.

01-26-2021, 08:25 PM	#6
ElderJ Drives: 2014 Camaro 1LT Join Date: Aug 2019 Location: Central Florida Posts: 372	Thanks fellas

01-27-2021, 07:23 PM	#9
supersnake05 Drives: 2015 Camaro SS 1LE, 2014 Chevy SS Join Date: Sep 2020 Location: Florida Posts: 97	Toyotas have a low pressure threshold set around 27.5 psi to set tire light. They are pretty close to car and my digital gauge at work. I wouldn't say set lower cause then tires would be over inflated a bit going off car gauges.

01-27-2021, 08:03 PM	#10
BuddyLee Drives: 2013 Camaro 2SS/RS Join Date: Aug 2020 Location: Pacific Northwest Posts: 802	The right front reads 24 on the dash but 42 with a TPG.

01-28-2021, 09:04 AM	#13
TheFlyingBananaSS Evil Genius of Chevrolet Drives: 2017 Z06, 2019 XTS, 2013 SS Join Date: Feb 2017 Location: New York Posts: 3,260	13 needs the tool too. $15 on ebay __________________ GPI SS2 VVT cam, ECS Novi 1500 supercharger, Corsa Extreme, Detroit Speed and BMR suspension, Circle D triple disc, Melling oil pump, LS2 chain tensioner, ATI 10% UD, DSX E85 kit, High Energy coils, BTR springs, LS2 Lifter trays, Titanium retainers, hardened push rods, FIC 1000 injectors, ZL1 pump, Mighty Mouse catch can, AEM gauges, Tial BOV, Richmond 3.91 gears, Custom gauge bezels, Speed Engineering headers, Stainless Works HF cats, DSX Aux pump, 710rwhp on E85.