I RAN THESE ON BOTH MY 4-MIL CUB AND ON MY 4-MIL TWISTER SMALL BLOCK. THEY WORKED GREAT FOR BOTH SET UPS. ESPECIALLY GREAT ON THE HILL CLIMBS AND TREE SHOTS. WOULD HAVE WORKED GREAT ON DRAGS WHEN I RAN MY 15 TOOTH FRONT SPROCKET. WITH MY 14 TOOTH THE FRONT END CAME UP A BIT TOO MUCH. ALL IN ALL, GREAT TIRES FOR YOUR SET UP.