Newbie needs tow vehicle PSI advice

K-9 HANDLER wrote:
Dude Id just run 60 in all the time.

There is no "one size fits all" in the situation.

Over pressuring the tire without enough load will result in poor traction, poor handling, poor braking, excessively hard ride and poor tire wear taking the centers out of the tire.

I have a 2020 F250 with load range E, factory door sticker min is 55 PSI but tire can take 80 PSI.

However, the empty weight of my F250 is nearly 1,000 lbs HEAVIER than a F150.

I typically run 70 in front and 68 in rear when empty. When towing air up to 80 PSI on rear and 78 PSI on front.

That 2 lbs differential is because of the weight differences between front and rear when empty and loaded, running same pressure can affect ride and handling. This comes from experience, having owned a 97 Heavy half (light duty F250), 2003 F250, 2006 F250, 2013 F250, 2019 F250, 2020 F250..

But keep in mind what I do for my F250 may not work at all for the OPs vehicle.

There has been more than once where some folks have done a "chalk" test on the tires, that is where they spread chalk on the tire then roll the vehicle and check to see how well the chalk transferred to the pavement. Too much air and only chalk in the center transfers, too little air and only the sides transfer. Either way will cause excessive wear on the tire.

Something else OP did not consider, Load range E tires are heavier, about 3lbs per tire.. Does not sound like much but that extra weight does impact fuel economy, braking and handling if vehicle was not specifically designed for that.