Pro-Line 8184-12 2.2 Rear Buggy Hole Shot Rear Tires.  Tires R3 Compound and white foam inserts.  Super soft, super sticky, extremely high traction R3 compound.  Square, micro pins with flat tips.  Low flex sidewall.  The R3 compound is the tire for hard packed/blue groove conditions, and this tire lasts up to five times longer than M3 compound.  Wide carcass design..  Will fit on any rear 2.2" buggy (not truck) rims.  The sidewall says "PRO-LINE", "PRO-184", "HOLE-SHOT" and  "2.2 x 1.70".