You can use Yocohama semi slicks just about legally(the police will be iffy about them if they pull you over) on the roads in this country, my freind had them on his Tommi Makinen evo and they produce ridiculous amounts of grip, approaching race slicks, they do however come with a disclaimer, something to do with driving in wet conditions.
I find the comfort tires in GT don't have anywhere near enough grip to analogue road tires in real life, my Nissan runs on standard road tyres and it handles more like it really does in terms of grip levels on sports medium/sports soft in game. [...]
Yokohama Advan A048, as I already mentioned, are DOT legal. Along with the other R compound tires I listed in my previous post, they are included in the intensely track-focused competition category of DOT approved performance tires that would be comparable to the lower spectrum of the Sport category of GT tires.
In fact, in my initial post, it should have been Comfort
Mediums that would be more analogous to the majority of tires on high performance vehicles. This is according to Polyphony Digital. I have edited my initial post accordingly.
It seems people equate the Sport range of tires with their real life rides simply because of how the categories have been implemented in the game. Conceivably, they then expect that certain minimum level of grip that Sport tires afford them and, subsequently, feel that any less, such as in that afforded by Comfort tires, becomes unnaturally low in grip level - even if lateral sustainable G-forces would indicate otherwise. Unfortunately, you can't get a visceral feel of lateral G-forces in a game, which may be another partial source of the disconnect in presumed grip levels.
The reality may be that they just have to drive slower, with more restraint and more finesse - i.e., they have to work harder and be more precise with their inputs to get the maximum performance out of the tires and, in turn, out of the vehicles. Just as in real life, R compound tires tend to mask any such dearth in finesse or proper driving ability.
In any case, many people seem to use exaggeratedly high grip tires in GT and tend to erroneously equate it with the real life ability of their cars (or, even worse, themselves).