I recently got these tires installed and am wondering what psi they are supposed to be at. The place I got them installed at apparently didnt know either as they made they all different by about 5psi each.

 

32-34psi depending on how firm you like them. GM recommends 32, but I find that a little soft for my taste. Tire pressure is based on the weight of your vehicle.

 

ok excellent. I actually thought that and lowered them to 35 when i got home. They had them around 50 psi lol

 

50 psi wow

 

A lot of shops over-inflate the tires to make sure the bead is set. It's a good thing you checked the pressure. 50psi would make for a VERY small contact patch (dangerous lack of traction). They could also wear badly in the middle of the tire at that pressure.