I have a 00 Durango with the 4.7L. It has 75000 miles and running strong. It sits on 31/10.5/15. What do you guys recommend for tire psi for the best gas milage? Right now I ride at 38 psi. Also, how long should this engine last me? Any info would be great. Thanks

 

I usually run 38 psi. The truck handles good and great tire ware. I run Big O's same size. I think the max tire psi is 50 but I never run the high.