Time to regear...
4.56 would put you as the equivalent of a 3.94 with stock size. I could see that making sense. As Threeper said above, you do have more rotational mass.
Is your tune from a reputable tuner? A good custom tune will also make a HUGE difference. Canned tunes do very little. A good custom tune will add 100+ ft lbs of torque down low and make all the difference.
I'm only on 34's, but with the stock 3.55's I still don't have traction with just a second gear roll with the 5 Star tune. It makes so much torque down low that more gear would just be more tire spin.
Is your tune from a reputable tuner? A good custom tune will also make a HUGE difference. Canned tunes do very little. A good custom tune will add 100+ ft lbs of torque down low and make all the difference.
I'm only on 34's, but with the stock 3.55's I still don't have traction with just a second gear roll with the 5 Star tune. It makes so much torque down low that more gear would just be more tire spin.
5* as well. I’m gonna call them and see what they say since they would be doing the tune revision and have a ton of experience with gearing, just trying to get the most input as possible.

