Ya..the car has a better ride quality but you do gain some body roll. I'm going with 40s
also for that 10mm extra width you may lost your MPG and take longer on 0~60 time...although very minimum...
I dont think it should make a difference on your gas millage unless you're constantly in rain.
for your 0-60, that should only inprove seeing you have "more" traction of the start.