They look to be a newer version of the original Traxxas Response tires. You can find the original traxxas Response tires here:
http://www3.towerhobbies.com/cgi-bin...?&I=LXHGB6&P=7
Since they are a 3.8" inner diameter tire, they'll only work on Traxxas 3.8" Wheels or Pro-Line 40 Series wheels.