[htn123]

Yep, mine are Goodyear SR-AS also.
Notice this morning after release from 45psi to 40:
1. The ride is much more smoother, don't feel all the bumps on the road as before.
2. When turning, with the windows down, I can hear more rubber being grinds against the road.
3. Much more gripping on the curve than before, well, I installed the leaf springs helper lastnight so that might contribute to the gripping.

So, I think everything has a cost associated with it. Want a smoother ride, more handling? lower the pressure, but then you will probably pay more for the gas, MPG probably will be down. Want a firm ride, better gas milage? bring it up close to the tire limit, but then you will feel everything on the road.
Just my opinion.