Alan at Ma's resin repops the Super Swamper Boggers in soft rubber:
http://public.fotki.com/cnaind/truck-tires--wheels/off-road--pickup-tires/page2.html
The Ground Hawgs used to be available in a corrected version (sidewall lettering on BOTH sides, directional tread) from Arrowhead Aluminum, but no longer
Sure wish someone would redo the old kit tires & offer them in resin and/or rubber again!