I do not have quad lift. Tires are very nice on Hiway, no vibrations, just a little more sensetive to the small road bumps, tires are a 117 load rating XL. So far power delivery is the same, I have the Hemi. From a dead stop no issues, transmission shifts the same. as far as MPG have not checked that yet, will keep ya posted, i am very satisfied with this purchase. I had the Cooper Zeon on my 2010 Ram and liked them alot, I just wanted to try the Discoverer A/T3 . A/T3 are a nice looking tire also, a close resembelance to the Zeons.
No rubbing at all. no issues. tire shop had 43 psi in tires, so I let air out, now at 35 psi. Much better. I was averaging 16.1 MPG now the computer says 16.0 MPG. and I kinda hot dog my ride.