What should my tire pressure be??

Hi, I have a 2006 toyota tacoma access cab 4x4 with M + S LT265/75R15 Discoverer cooper stt tires and I was just wondering what my tire pressure should be. On the tire it says 80psi but I know thats not right, ever since I got this truck these tires were on them and I am starting to notice them wear down on the center of the tire, if anyone could please help me out it I would really appreciate it.. thank you.

 

Probably around 34 psi

Do a chalk test

 

How exactly do you do a chalk test? And is there anyway of just seeing a chart as to what they should be? Ive tried looking everywhere , but no luck.

 

It depends on the weight you are carrying

A chalk test consists of putting stripes of blackboard chalk across the tire , drive for a short distance , if the chalk is worn evenly the inflation is correct , chalk missing in the middle only shows overinflation , edges gone but centre remaining shows under inflation

34 PSI will be a good starting point for you though

 

Ok thank you, I will definetly try that.

 

x2 OZ-T knows his psi