FWIW, a reading of 42psi on my hand held guage equates to a DIC display of 48psi.
Using a different hand held guage yields similar results. This disparity Is exactly opposite on my car. When my hand held guage reads 32 psi on my Corvette tires, the DIC display shows 27-28 psi. Similar results with different hand held guage.

My unscientific conclusion is that TPMS psi readings should not be relied upon for an absolute value, but instead as a means of detecting or monitoring pressure loss. Tires should be properly inflated, and regularly checked, with a guage known to be accurate.

WOW

My 2010 Concours reads exactly the same pressure as my hand held gauge. My Tahoe is also exactly the same reading.

I am very surprised at your results.

FWIW, a reading of 42psi on my hand held guage equates to a DIC display of 48psi.
Using a different hand held guage yields similar results. This disparity Is exactly opposite on my car. When my hand held guage reads 32 psi on my Corvette tires, the DIC display shows 27-28 psi. Similar results with different hand held guage.

My unscientific conclusion is that TPMS psi readings should not be relied upon for an absolute value, but instead as a means of detecting or monitoring pressure loss. Tires should be properly inflated, and regularly checked, with a guage known to be accurate.

My unscientific conclusion is that TPMS psi readings should not be relied upon for an absolute value, but instead as a means of detecting or monitoring pressure loss. Tires should be properly inflated, and regularly checked, with a guage known to be accurate.

+1

FWIW, a reading of 42psi on my hand held guage equates to a DIC display of 48psi.
Using a different hand held guage yields similar results.

Mine is consistently within 2psi.

Mine is consistently within 2psi.

So are mine.

Mine isn't.

Mine isn't.

Well now, that's a conundrum (word of the day) isn't it?

 

Not to go off topic on a tire thread type......but I run 8-9 pounds, the lockers keep me right 

42 front/rear. I only ride interstate usually, never any passengers, just some gear occasionally

OP never came back. Hope he's still alive.

OP never came back. Hope he's still alive.

Maybe he decided to run 128psi

Right...

OP never came back. Hope he's still alive.

Oh I'm still here.  Set my psi at 42 and been ridin' ever since.  What day is it?

Oh I'm still here.  Set my psi at 42 and been ridin' ever since.  What day is it?

It is umpteen days past whenever

Oh I'm still here.  Set my psi at 42 and been ridin' ever since.  What day is it?

Oh I'm still here.  Set my psi at 42 and been ridin' ever since.  What day is it?

  Sure can tell it's winter most places. We've been beating this to death for 4 pages and the OP's been out riding. 

  Sure can tell it's winter most places. We've been beating this to death for 4 pages and the OP's been out riding. 

Hahaha...I was just thinking the same thing. This thread is the gift that just keeps on giving;).

Yeah it's bad down here started my ride it was 72 , just got home thank GOD for heated grips it's a NASTY 69 now....

Yeah it's bad down here started my ride it was 72 , just got home thank GOD for heated grips it's a NASTY 69 now....

69 wow!  You can borrow my heated jacker liner too.  Be careful in that cold