Heh, 4 secs, and the rest
seriously though, you're not worried about graphics, grandprix legends, a must just to experience how cruel it can be.
Aside from the Iracing sub, nascar 2003 and it's ton of road racing mods is also a good call, online a full field of cars on an oval is great, but there's plenty of road and track you can download for it, if thats not you're thing.
Grids great too, i bought it for the ps3, better played with a pad in my eyes, easy pick up and play multiplayer.. it's worth anyones time at the cheap price you can pick it up for now, dirt the same 6 quid retail in the supermarket.
And there's rfactor, not allways my favourite, but lots like it, the bmw m3 mod is a highlight for me.