Anyone ran any 33's like that? Is 30 lbs a good starting point on a 2 door JK, until it drys up enough around here for a chalk test?

 

30-35 would be a good range for right now

 

30 lbs was a little stiff when I had Duratracs (285/75r16, E rated) on my 2 door.
I chalk tested them, and 27-28 seemed to be the magic number.

Currently, im running Duratracs (same size) on my 4 door with AEV 2.5" and have them at 27.

 

Thanks!

 

Like folks have said every vehicle can be weighted a little differently so pressures can vary. We tend to run a 2 psi split between the front and back, so lets say 28 psi in the front and 26 psi in the rear for a tire of that size.

RK

 

Yes, I never understood why the recommended pressure is way too high (a chalk test proves it to be too high).

 

There's a big difference between 30 and 35.
On a 2-dr I'd use 28~30 at the most.

 

E-rated tires are for heavier vehicles & loads than our JK(U)s. They are too stiff.
Not recommended for 4-dr Jeeps, even less for the lighter 2-dr.

Yes, the side walls of E-rated tires are less prone to be torn by rocks etc', but there are no free meals... they make the overall ride harder, and are less flexible, so they comply less with the terrain.

 

I'm running 20 in mine, because of the storm we had, & they barely started sagging. I don't have beadlocks, but I'll bet I could run 10 lbs or a little less, aired down for off-road.

 

I dont think anyone would argue that E-rated tires are ideal for our JK/JKUs. But after running two sets of E-rated tires for the past 4 years, I think the ride quality issues may be exaggerated. Honestly, I have a difficult time telling the difference between the Duratracs and the factory BFGs (D-rated) ride quality. Is there a difference? Im sure there is. Its just too small for me to notice the difference.

Regardless, the poster asked what he should run his E rated Duratracs at. I appreciate you were trying to be helpful, but telling him (or me), that we shouldn't have bought them in the first place doesn't answer his question. Like they say, that ship has sailed.