I ordered a procal to help with the shift points on my Jk 2dr and went I went to measure it seems like the 33x12.5/15 duratracs only measure out to about 31" I am running 31psi.

Does anyone know what the factory settings are for stock sahara duelers. I purchased the procal mostly for shift points but if it is set for 31 from the factory maybe I just wasted my money.

 

I don't think that you wasted your money. I like the Duro's better. Not sure about OEM specs. But any tire "mounted" will be shorter than "dismounted". Just sell the tires you don't like.

 

I love the duratracs and the look of the vehicle. I was wondering if I wasted my money on the procal becuase the main reason I bought it was for the shift points. If the computer is already programmed for 31's there might not be anything to change.

 

He means wasting money on the Pro-Cal.

I'd suggest running by a dealership with a tape measure on your way home from work and checking it out.

My 255/75/17 SRA's measure 31.5 inches.

 

Gotcha! The OEM tires are 32". OP says the Duro's are 33". So -

 

My Duratracs actually are measuring 31". Maybe because I am only running 31psi. If they are the same size or possibly smaller than stock, this may defeat the purpose.

 

Just curious - how wide are your rims?

 

The OEM's are manufacturer speced at 32". The Duratracs manufacturer spec is 33". This small of a change is debateable on the recal. But for me, there wouldn't be a debate. Keep the new stuff.

 

I have 8" rims.

 

What is your actual tire size? I didn't think Duratrac made a 33 in an 17 or 18" wheel...