I completely disagree. I have 4.10's with 33's, and I feel I am geared just about perfect for all around situations (highway, grunt, etc...) For off-roading or mudding, 4.56 would have been a better choice for me - with 33" tires. So, if I were doing 35" tires, I would not hesitate to do 4.56 gears. There's formulas to calculate this stuff, but they do not take into consideration the start weight of a Dodge Ram, added weight of larger tires, and rolling resistance of larger tires. These trucks are very heavy and love the gears. 4.10 would be ok, but for all around better improvment, I would definetly say 4.56 with 35's.