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Recommended PSI Mastercraft Courser MXT

2K views 4 replies 4 participants last post by  IcarusLSC 
#1 ·
New Jeep owner with 2014 JK with 33 in /12.5 Mastercraft Courser MXT's.
Ran into avid Jeep owner at the local self car wash and he said to keep the tire pressure at 18 - 20 PSI versus recommended tire PSI of 33.
He said keeping at 18-20 PSI would prolong life of the tires? Is this correct? Is this safe, even for everyday driving?

Thanks,
 
#3 ·
That's too low. What wheel size and load range are they?
 
#4 ·
Please Please check the sidewall of your tires

Dear Jeep owner ; Please Please check the sidewall of your Actual tires ; it will have Actual inflation maximum for Your Actual tires ; Go about 3 to 5 pounds Under the Maximum , whilst tires are cold , for street driving . (By the way , you'll want to go about 8 pounds under the Maximum if you are going over rocks and fallen trees during a hurricane .):bop:
 
#5 ·
Dear Jeep owner ; Please Please check the sidewall of your Actual tires ; it will have Actual inflation maximum for Your Actual tires ; Go about 3 to 5 pounds Under the Maximum , whilst tires are cold , for street driving . (By the way , you'll want to go about 8 pounds under the Maximum if you are going over rocks and fallen trees during a hurricane .):bop:
This is incorrect.

You want to go by the sticker on the door jamb if anything. This number on the jamb is usually mix of comfort and fuel mileage, more geared towards fuel mileage.

The number on the tire sidewall is maximum cold inflation pressure. It is the max the tire can handle at maximum tire load rating and nothing else (read= a limit, not a recommendation!) It is always higher compared to the door jamb sticker (or should be!)
 
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