Tire PSI for a daily driver?

[Fishtaco]

Ok I run 30psi but my rear look flatter than my fronts, regardless the psi I choose do you guys run even psi rear and front or do you run higher in the rear?
My springs are balanced quite well so empty tub a full gas tank flattens my rears but my fronts stay the same spring height stays the same regardless.

Cheers

 

[TWiG01]

I think sometimes your eyes can play tricks on you. Sometimes how you are parked/ what you are parked on can be a factor, but if you check them and they are all the same I wouldn’t worry about it. Keep all the tires at the same pressure
Some good info here too:

https://wranglertjforum.com/threads/tire-pressure-calculation.1815/

 

[Fishtaco]

I think sometimes your eyes can play tricks on you. Sometimes how you are parked/ what you are parked on can be a factor, but if you check them and they are all the same I wouldn’t worry about it. Keep all the tires at the same pressure
Some good info here too:

https://wranglertjforum.com/threads/tire-pressure-calculation.1815/

I dont think so! my rears are flatter than my fronts same PSI I will take pics tomorrow when its light. My rears look flat at the bottom and my fronts do not, I only noticed because I thought one of my rears may have lost pressure but they are the same?

 

[JMT]

You run the same pressure at all 4 corners.

 

[TheBoogieman]

My rears look flat at the bottom

If they look flat at the top, then you have a problem.

 

[JEEPCJTJ]

30 PSI over there? Did you guys run out of kilopascals?

And if I referred to them as kPa, I'd have to ask, Which a is the little a?

 

[TWiG01]

I dont think so! my rears are flatter than my fronts same PSI I will take pics tomorrow when its light. My rears look flat at the bottom and my fronts do not, I only noticed because I thought one of my rears may have lost pressure but they are the same?

If they are all reading 30psi, I wouldn’t over think it. Next time you rotate them, you’ll have to see if they do the same thing.

 

[srimes]

Proper tire pressure depends on load. If your front and rear weights are the same the tire pressure should be the same.

Like most cars, mine is lighter in the rear so I run a couple psi less in the back.

 

[suicideking]

I run the same pressure on all 4 tires. Currently 27 psi is about right.

 

[pagrey]

I run the same front and rear. I think the TJ/LJ is pretty evenly balanced front to rear. If you are heavily loaded you are probably closer to 50/50 but it's close enough not to matter in my opinion.

 

[Mudflat]

I run the same pressure on all 4 tires. Currently 27 psi is about right.

Me too. 33”/12 50R15 tires on 8” rims.

 

[Mudflat]

I would

Ok I run 30psi but my rear look flatter than my fronts, regardless the psi I choose do you guys run even psi rear and front or do you run higher in the rear?
My springs are balanced quite well so empty tub a full gas tank flattens my rears but my fronts stay the same spring height stays the same regardless.

Che

Proper tire pressure depends on load. If your front and rear weights are the same the tire pressure should be the same.

Like most cars, mine is lighter in the rear so I run a couple psi less in the back.

you could also do “the chalk test” to see if your psi is too high or too low. Do a search on this forum for the exact procedure.

 

[Fishtaco]

30 PSI over there? Did you guys run out of kilopascals?

And if I referred to them as kPa, I'd have to ask, Which a is the little a?

Nobody knows what KPa is when airing up tires we still use psi, you can choose either at a gas station, I think it is just handed down? "Put 28-30 in and yall be right" Strange really we still use feet and inches when talking somebody's height but never officially, even kids say feet and inches when referring to height?

I work off millimetres but people in retail use centimetres which gets confusing for those who don't measure much, I say 2400 for 2.4metres people in retail say 240 cm they cant understand 2400 or even 2.4, curtain and flooring shops are the worst.

I am getting old though, I still use "O" instead of "zero" which is confusing when giving out a cell number as most only use zero?

 

[John Cooper]

Ok I run 30psi but my rear look flatter than my fronts, regardless the psi I choose do you guys run even psi rear and front or do you run higher in the rear?
My springs are balanced quite well so empty tub a full gas tank flattens my rears but my fronts stay the same spring height stays the same regardless.

Cheers

So your jeep has a badonkey donk???

Junk in da trunk???

Looks like them Kardashian chicks????

 

[John Cooper]

I dont think so! my rears are flatter than my fronts same PSI I will take pics tomorrow when its light. My rears look flat at the bottom and my fronts do not, I only noticed because I thought one of my rears may have lost pressure but they are the same?

Do you ride around playing Queens "Fat Bottom Girls"?

 

[freedom_in_4low]

seeing a lot of 26-27 psi for 33's, curious what people are running with 35s.

 

[derekmac]

seeing a lot of 26-27 psi for 33's, curious what people are running with 35s.

I run 25 in mine. Load range C General Grabber X3's.

 

[nathanotis]

Is the "Chalk Test" still a relied-upon method to determine a good air pressure?

 

[John Cooper]

Is the "Chalk Test" still a relied-upon method to determine a good air pressure?

Back when I did the chalk test(80's-90's) it seems I would pretty much get 26-28 psi on 33 12.5 15. So I stopped chalking and just run 26psi now with great results!

 

[WestCoastDan]

My new digital tire pressure guage is supposed to arrive today, so I'll be able to easily adjust so they are all the same. The stupid slider on my previous guage wasn't very accurate so when I attached the TPMS caps, they were all different... it made me feel like I was driving in a circle. LOL