[jorgensensc]

Originally Posted by sdkid

I have been told at training schools that the spec in the door post or owner manual is what to use. The spec on the tire is the max pressure that the tire can handle while driving wide open on the autobon. Don't know if thats the truth , but is what I was told at a chrysler training class.

THere is the problem with "tech" schools (no offense towards you). If you are running different than factory tires, or as in our case are probably missing that piece on the door post, then what are you supposed to do. By doing research and such education occurs and we understand the reasoning behind things, not just take things for face value. That is why if you take your truck and get a "tune up" from a local shop they will tune it back to factory specs and it will probably run like crap. If asked they will say" that is what the factory specs are" and most likely they won't be able to get it to run right. The pressures we run on our tirs are recommended for the softest ride, not for the best wear or mpg.