Peter
Hi Rick,
I didn't do any track with the Toyos, but I reckon that others on the forum have.
I have Toyo T1R's on mine, they were good on the hill climb (apart from my fronts which are away older than the rears - probably 'too' old) But on the circuit they were fine until they went off, then I did too. My fault, I felt the change and was too cocky coming out onto the 2nd last straight.
I guess they may be alright if you gave them a cool down couple of laps now and then but pushing each and every corner made them greasy.
Road and Track
many of the "proper" race semi slicks are also DOT approved so they are classed as production tyres and acceptable on the street (but wont last long). CAMS has a list of these
They may be DOT approved but i'd bet that most of the po po would defect you for them. You could wave any USA standard under their noses but it wouldn't get you far.
If you wanted to do that i'd suggest having Australian standards paperwork showing the numpty cop that they are legal for the street.