correct tire pressure for cooper stt pro

[basslowend]

looking for correct tire pressure for cooper stt pro

Anyone got any suggestions for 285 65 18 cooper stt pro on 1500 4x4? I have 45 psi in them right now but my mpg seems to have taken a hit from the Nitto Trail Grappler I had on there before. Thinking about going up to 55 psi. I thought mpg would be slightly better due to that the Nitto is a little heavier than the Cooper. By the way the coopers are quieter and ride better than the Nitto.

Thanks

 

[Ram Night]

Your best bet is go by the tire pressure on the door sticker. If you went with something a lot bigger than stock, then that is a different story. Just remember the bigger the tire, the lower your mileage will be.
My sport has 275-60/20 tires, and my is door sticker is 39 lbs.

 

[Ratket]

Ur door sticker is for p rated tires.. that’s what 40 psi is for. Depends on the load if any. That will decide the air pressure u should run and how the tires will wear.

 

[BrianandChrissy]

Also, remember, your tpms sensor will light up if there is a large difference in tire pressure in one tire over the others. If you run them all at say..55psi, your tpms light will not come on.

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[BrianandChrissy]

I run my load range E Mickey Thompson 35's at 46 psi for example.

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