Recommended PSI?
10-20-2010, 03:24 AM
#21
JK Junkie
Can a dealer flash to a different PSI if I tell them that I need to run 30 psi in my 33s? Like, they could drop it to 25psi? <---- no money for a programmer at the moment. My TPMS goes off at around 32psi.
Last edited by IcyFridge; 10-20-2010 at 03:49 AM.
10-20-2010, 04:56 AM
#22
JK Super Freak
dealership reprogrammed mine down to 25psi free of charge.
10-20-2010, 05:57 AM
#23
JK Super Freak
Join Date: Apr 2009
Location: Forsyth County, GA
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Tire shop inflated my new STT's to 38 PSI ... when I got home I could see that the tires were riding only on the center tread. I currently have mine down to 30 PSI and it seems all the tread is now in contact with ground.
02-15-2011, 04:49 PM
#24
JK Newbie
Join Date: Jan 2010
Location: Jamaica, NY
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Just wondering what PSI I should be running for daily/highway use? I have 33x12.5 Mickey Thompson MTZ's. When I got it from the dealer, they had them up to full capacity (50 PSI!!!) I dropped them to 38 but would love some input from you more experienced JK owners. 1st time Jeep owner here, so take it easy
Also, what about off-road??? (mud,sand,snow)
Also, what about off-road??? (mud,sand,snow)
but just to share with all of you, recently I've noticed that I've been getting poor gas mileage on my 2007 JK 4-door... I didn't have great mileage to begin with, but it went bad really fast... When i investigated why, I realized that I did not monitor my tire pressure all throughout this very cold winter... last I checked with my tires before the winter, my tires were a little above 40 PSI... in my investigation, i found that my tires went down to 35.
I do also have to replace/clean my air filter (it's actually a CAI filter, supposedly to help fuel efficiency) so that can be another factor, but I strongly feel that the main reason is the lower PSI.
I'm not as experienced as many of you here, but I learned enough to wonder how some of the you can drive 25-30 PSI on-road... I guess it depends on the type and size of your tires, but I know for sure that I'm not going lower than 40... I'm inclined to bring it up to 45 and see how that turns out...
hope my experience helps...