Originally Posted by loveracing1988
I will disagree with you on the max pressure not being a cold rating.
That is the pressure that is required to carry the maximum load that the tire is rated for. If it was just a max pressure you would have to have some sort of bleeder to bleed off excess pressure that heat creates because you wouldnt know what to set the pressure at when they were cold, you won't know exactly how much pressure you will gain.
" This number gives the maximum cold pressure required to carry the maximum load for which the tire is rated. The maximum pressure number is*not*the same as the recommended tire pressure for your vehicle."
The PSI listed on the side of the tire is the maximum PSI it is rated for period. It is at temp as well and is not a cold PSI rating. You should never exceed that PSI rating on the side of the tire. This info is available anywhere.
There is no need for a bleeder. If you just set your tire PSI to the car mfg's PSI rating on the door jamb you will not exceed the tire's maximum safe PSI rating that is on the sidewall( assuming stock sizes here ). You can also get a feel for how high the PSI goes by checking it cold and then warm to see how much it increased. You can then play with the cold PSI to get maximum carrying and MPG while not exceeding the safe PSI limit for the tire.
Example. My tires carry a 44 Max PSI rating. My door jamb says set the tires to 32 PSI as I recall( may even be 30 ). It is too low however whatever it is. If I set them to 35 PSI in the summer and 37 in the winter I run at 40-41 PSI at full operating temp. This gives a better ride, helps me out towing, helps with MPG, and I do not exceed that 44 max rating.
Again, never set your tire PSI - COLD - to that max rating on the sidewall. Not even to max out your towing/hauling capacity. You shouldn't even run them at the max rating at full temp. Always a PSI or 2 under.