OnStar services
Thread Starter
Racer
Joined: Apr 2018
Posts: 327
Likes: 46
OnStar services
I received an email from Onstar services about my car yesterday and it had said the 2 left side tires were at 28psi. It also said the right front was at 27psi n the right rear at 24psi. I went to my buddies shop to put air and found out Onstar was wrong. Only had one tire at 29psi. My buddy had a digital gauge on his hose n I had a brand new hand held digital gauge which both showed the same readings as my buddy’s. Anyone else know had this issue? Thanks in advance
Burning Brakes
Joined: Aug 2001
Posts: 837
Likes: 388
From: Olathe KS
I agree. The tire pressures will change rapidly on the OEM MPSS or Cup2 tires when you are driving. Depending on how far away your buddy's shop is, how warm it is outside, and how fast you were driving (highway?) to get there it could go up 3-4 psi over cold easy. Recommended COLD air pressure in the tires is 30 just FYI, that's why it was giving you an alert.
