As someone who drove a ton in gt3 and gt4, i can say without a doubt that gt5's racing soft tires simply feel unrealistic compared to using street tires, as far as non-racecar racing is concerned. The most i'll use is racing hards, and that's only in my crazy Jaguar LM racer or my Nomad. Other than that it's simply more challenging to use sport tires. Imho they get a nicer sweet spot for endurance races, and once you do a hot lap or two they actually improve quite a bit from when they're quote unquote cold.
Tl;dr version:
The only tires going on my Black Ed. GT-R and my shiny new Aventador are street tires, seeing as how those are street cars to begin with.
Tl;dr version:
The only tires going on my Black Ed. GT-R and my shiny new Aventador are street tires, seeing as how those are street cars to begin with.