245/45-17 and 245/40-18 According to Cokertires.
What I read, was that it was aimed at Autocrossers and IRS Drag Cars. So I guess it is pretty soft.
But I would think it maybe works best as a rear tire on an IRS car maybe to cancel out camber gain. But then again you would just loose some tire area another place in the suspension travel than you did before. So it just evens up.. But you can get camber on a stiff rear end by just changing tires though.
My head is now working overtime to see good use for it in the front, since you have to adjust your car to the tires. And it depends how your front end camber curve is anyway. I think I rather would keep my "square" tires... Unless you maybe have a very special car that needs this for some reason.
Or do I not get it?