xlt long bed scab payload package towing etc.. says to have 50lbs in front and 60lbs in rear.. general americrap 245/7x/17's.. I I just got the truck 2 weeks ago.. was reading this and that and came across those numbers.. so I checked and they were all at 36psi... I bumped them up to 45 all around (highest I could get with the POS compressor i was using) so now I wonder.. is the 50 - 60 number correct? I hate dealers.....I dont understand how they could let a car go out to a customer with that much underinflation!!

 

If you're reading the side wall of the tire, that's MAXIMUM pressure. You don't want to inflate to that PSI because driving and load will heat the air in the tires and cause pressure to exceed that max. limit.

Look for recommended pressure on the sticker inside the driver's side door. Each brand of tire is different.

 

As a general rule use the numbers on the placard inside your door. Running with too much air will NOT overheat your tires, it will actually make them run cooler. If overinflated they will however wear incorrectly and cause the ride to be harsher than needed. The maximum tire pressures given on the sidewalls are for cold inflation temperatures. Yes as they heat up the pressure will be higher, but this is taken into account when the cold inflation pressures are given.
Doug

 

I have an 04 SCrew. The tire size and pressures are also found inside the gas cover door. My 255/65/17 tires (Continental) are listed as 35 lbs. both front and rear.

 

It's real simple if you are running stock size and stock load rating, use the factory recommended pressures. They are designed for safety, load capacity, performance and comfort.