I have a F250 and I usually run around 60-65 front and rear when empty. When I am loaded or towing the TT, I run about 55 front and 75-80 in the rear.

 

If you have aftermarket tires do not use the psi ratings on the door jamb, they are for stock OEM tires that came with the truck. I usually run 45 psi front and rear for everyday use on LT tires that are load range E. The sidewall will have a max pressure 65 to 80 psi for most pickup truck's but running them at that pressure will rattle your eyeballs on an unloaded truck. A 3/4 or 1 ton truck is heavier and can get by running more tire pressure because of the weight of the truck. A normal 1/2 ton should be OK at 45 psi.

 

I run 45 psi in these and they are wearing great. Each vehicle has different values for tire pressures.

 

I do the same as CaptainQuint but just use the dust on the garage floor, easy to see and if the tires don't pick up dirt or dust on the outer tread drop them a few PSI.

 

I run what it says on the door jamb. 35 psi IIRC. My tires wear evenly and I got over 55,000 miles on the stock tires.

 

Always start with the PSI listed in your manual or the door jamb. The PSI listed on the tire..be it aftermarket or OEM is max psi. After having worked in the tire biz for years, working with reps from several different companies...even they'll tell you to use the door jamb as a starting point....NOT the max psi listed on THEIR tire. That PSI is only used as a max. Most tire sites will have the above printed out on their "facts" or "tips" page.

I always start with the psi listed on the door jamb...usually I have to add 5-10 lbs to get them where "I" want them...That said I tow alot. That psi is going to different for every car, tire, front or back. But the door jamb is a good starting point.

http://www.goodyeartires.com/service-faqs/

http://www.coopertire.com/html/produ...aqs.aspx?tab=5

http://www.hankooktire-eu.com/servic...-pressure.html

http://www.michelinman.com/tire-care...pressure-tips/

Wenty

 

 

I run 60-65 depending on season.

 

I am running about 47 psi in my Cooper Zeon's right now

 

I'd go with the door jam