Mine came with P4Ss tire wise, and has big brakes, just because the tires are showing noticeable wear in 9 months doesn't mean they are crappy, haha.
But to the OP, I don't see the need to blast around much higher than the speed limit when traffic allows, though I definitely blast the onramps and some stoplights.
I think some of what you're seeing is the same as I used to see on twin turbo S class Mercedes around here when a little wet out, often driven by someone who looked terrified at 30-45 mph. I think they just went in and asked for whatever was most expensive, with no eye towards the power at all.