2001 SR5, 2x4 with a OME 3" with 890's & 883's. I went with General tire Grabber A/T2's 265/75R16's, set @ 50 psi. I drive between 100 to 110 miles. I average 20 mpg on the hwy & 15.8 on the streets. By the way my truck now has 231,000 miles on her & runs perfect ! I changed the rear end with...