yesterday went and got my oil changed and the guy asked me about the tire pressure. I told him I don't know. what is a good rule of thumb for tire pressure. I know factory recommends 35 psi but that is with 16 inch wheels. So what should the tire pressure be. I was at 50 and they brought it down to 40.

 

Look on your tire and see what max psi is. That's what I usually go by and I have had decent tire wear so it can't be too far off.

 

thanks I will do that.

 

with 275/45/20 - about 40psi, might be more with less sidewall

 

I ran about 32 psi on my 20's when I had them.

 

32F 30R

 

I'm running 38F 34R in my 20" Toyo's. I hadn't checked the tire pressure in a long time and they had gotten down to 29F and 31R. I hadn't checked them because they seemed to be wearing very well, but the handling was becoming shitty even with the Hotchkis set up, so I figured the tire pressure had to be it. I filled them up to the current numbers, and jeez it made a huge difference in the way the truck handles. Before it would squeal and plow, now it feels really tight and almost wants to oversteer in most situations, before plowing.

 

hmm maybe I have too much air in mine

 

I have 42F and 40R, but mine are 22's.