Join Date: Apr 2007
Location: Oxnard, CA, USA
Yep, we've found the computer reads 2-3 psi lower than a trusted manual gauge. You can either run the correct pressure and just know to add 2 psi to what the computer says, or run them a little harder and don't worry about it.
Honestly, very few riders can tell the difference from a 2 psi change on a street bike. Tires will heat up and change their pressure more than that anyway just from normal riding.
My biggest use for the TPM is to make sure that the pressure stay consistent over time, and doesn't drop noticeably over a few weeks or more. Also, I've had it alarm at me twice now, alerting me to a major puncture in enough time to get off the road and into a safe parking place before the tire went totally flat. That in itself is worth much more than worry about a 2 psi difference.
'13 Dark Graphite Metallic K16GTLD, 24K miles and counting...
'09 Magnesium Beige Metallic K13GT, 60K miles miles and counting...
'02 Mauve Metallic K12LTC, 106K miles and sold
BMWLT#145, IBA# 366, MOA# 111996, SCMA# 24032
All lower 48 states plus Alaska on the K13GT in two weeks . . .
Some people see the gas tank as half empty. Some see it as half full. All I care is that I know where the next tankful is coming from...