P245/70/16 Tire pressure

[Kaden]

Alright I need to know what pressure to run p245/70/16 tires on a 03 Jeep Liberty. Stock tire size was P235/70/16 at 33 psi. Thanks!!!

 

[rjkj2005]

Alright I need to know what pressure to run p245/70/16 tires on a 03 Jeep Liberty. Stock tire size was P235/70/16 at 33 psi. Thanks!!!

Same as what is called for in the factory tires. P rated tires stay the same regardless of size. If it where an LT tire. It would be different.

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[nbas]

Read the pdf i have posted in the following thread
http://www.jeepkj.com/forum/f200/tire-pressure-calculation-62606/
it explains exactly how to calculate the tire pressure on your new tires

 

[Kaden]

Alright thanks wasn’t sure if I should stay with the factory tire pressure or not.

 

[Kaden]

Ok what if the tires I want are still P rated but are also XL rated tires (extra load). Would that effect the psi I put in them or no???

 

[nbas]

You have to check the Tire Inflation tables.
Read the document. It explains how to apply the tables in
"Basic Procedures for reading and applying the load inflation tables"

 

[nbas]

33 psi on a P235/70R16 corresponds to a Load carrying capacity of 1918lbs
If you want to use a P245/70R16 tire for the same Load, you should inflate your new tire to approx 28-29psi since 26psi corresponds to a Load of 1841lbs and 29psi to a Load of 1940lbs.

 

[Kaden]

Thanks nbas I appreciate it!