im running 50lbs in my 32s because thats what it says on the tire its self
but it doesnt really seem to high because at about 35psi they looked a little low so what would u guys advice i have the pressure on the streets at and what pressure would u advice on the trails

 

if nothing else run the door sticker. 50 is way too much psi for an XJ!!! the XJ only ways 3600 lbs, most larger size tires are rated for a full size truck they are load range E. you'll never load an XJ down enough to ever need 50psi. I started with 32psi on my 33's and they are over inflated. I'm going to set them at 28 next for street driving, I'll try 18psi offroad

 

at 30psi they just look to low
i dont want to ware my tires down running them to low

 

A lot of people make that mistake when going by just the look. It's all in the compound of the tire and how soft or hard the rubber is, and usually the fronts look 'lower' than the rear due to the extra weight. It's like a full on snow tire with 30psi will usually look lower/flatter than an all-season with 30psi. I'd say anything more than 35psi in your tires will be too much and wear the middle out first.. (I run 26psi in my 34x12.5's on street)

 

i have e rated 32x15.50 nittos and run 35psi, it's plenty for the XJ

 

I usually run 25-28 psi in my 33's on the road, because anything over 30 psi rides like a brick. I don't recommend going lower than 25 psi on the road. I've been running 12 psi all weekend, to and from different wheeling places, and its spongy, and very dangerous. but offroad, I'll never run any higher lol.

 

I feel like id be riding rim on 12psi

 

my rear tires with 12 psi look like they do with 20+ psi in them. now, the front's everyone thinks are flat lol. until I blow a bead, I wouldn't wheel with any more. even then, I'll throw on my spare, air down, and keep on going lol. worst you do, is experiment with different psi. go wheeling and try 25 psi, 20 psi, etc etc. I'll see if I can get some pictures this week of my tires with 12 psi.

 

Ok ill give it a try
woulda have only 30psi in them on the streets wear your tires down quicker

 

I wouldn't think. 30 psi should be fine. I can tell you that you'll notice a softer ride with 30 psi vs 50 psi lol.

 

I run 25 in mine, 30 would be the highest i would run on a beefy max traction tire.

 

Larger the tire, the less air required.
50psi is ridiculous (and dangerous in wet stuff) , and your tires will crown and wear horribly in the middle.

I run 34 in my 31s in winter, 30 in summer.

If I were you I'd run 35 at most. Remember they may look flatter while not moving but that all changes with centrifugal force once they're rolling and "open up" more.

 

Guess it depends on what the tire manufature recommends. I run 15 psi on my mudkings and sometimes that seems like too much on the street.

 

Haha even though it's not a xj in my cummins I run 70 front and 50 rear. Just though I'd freak you out

 

Larger the tire, the less air required.
50psi is ridiculous (and dangerous in wet stuff) , and your tires will crown and wear horribly in the middle.

I run 34 in my 31s in winter, 30 in summer.

If I were you I'd run 32-35. Remember they may look flatter while not moving but that all changes with centrifugal force once they're rolling and "open up" more.