Congrats on the baby. My wife is 5 months along and I have to carry a little step ladder around in the back of the jeep for her. But this is 33's on a 4" I got the 4" because I'm going up to 35's when these wear out. And the steps are the Mopar tube steps.

 

Just lower the psi. W my 35's I'm running 19 psi. Better even wear. Gas milage sucks but oh we'll

 

I have 33" tires on my JK 2-door. I'm pretty sure that you don't need a lift... but I went with a 2.5" lift.

 

You shouldn't need a lift with 33s

 

That's funny! Ha I never thought about carrying a step ladder around lol

 

I am already @ 28psi.

And yes 33's on a 3.5" would look a lil small, But I have seen it done.

 

You've got the right idea, just keep doing the chalk test until you get the right pressure. Drop it a couple more PSI and see if that makes enough of a difference.

28 psi was about right for street driving on the 33-12.5-15 tires I had on my ZJ (similar curb weight to a JKU). I would guess 25psi is not out of the ballpark for running 35's on the street.

 

Thanks,
I am at 26 now and all is good. The tires are actually getting some heat to them
now and starting to break in a lil more. Smooth and quiet compared to my KM2's.