I have 33" MT Baja MTZ's and am wondering what the ideal pressure is when using my jeep on the road.

 

30 psi is a pretty good starting point. You can then run a chalk test from there to dial your specific pressure.

 

I'm usually between 28-34psi
If I know I have a long road trip I bump it up to 32-34 for better fuel economy(if there is such a thing in a Jeep).
Normal daily stuff is 28-30

 

as above poster said 30 will be close. I would recommend 26-32psi I have found on D and E rated tires it is really hard to use the chalk test as when ever I have tried the chalk test showed good from 16 thru 40 it just does not really ever show much difference. I like going by the 10% rule as that has always provided me with perfect tire wear. ie check psi cold and then check again after fully warmed up ie driving 10 miles and the pressure should rise about 10% from cold to hot. ie cold at 30psi hot should be 33psi.