Tire Pressure Calculator

[Martin B.]

So I've been looking for solid information on how much pressure to put in tires, when moving away from stock tire size or type ("P" vs LT, different load range, etc).

I never found anything to-the-point, except I remember someone talking about using GVWR and max tire load to calculate pressure. And I can't even find that post anymore.

 

 

Anyhow, I decided to make this from scratch:
https://docs.google.com/spreadsheets/d/17gh6VmylZWld50XcLvPbQVRRQoRFUZNiqndHQ7jzTb8/edit?usp=sharing

 

It doesn't mean that it's exactly the tire pressure you should use, but I guess it's a good start.

 

I hope it might be useful. Cheers!

 

 

 

[Jacoby]

Nice spreadsheet

 

I for one though am against running an 80psi tire at half its recommended pressure

 

Tire pressures are like oil.  Everyone has an opinion

[1SLOW1500]

I follow the tire specs over the gm specs when changing tires to non factory. 

As stated lots of opinions out there.