How about this for a mud tire?

MUDZILLA MUD TIRE from Maxxis

• RAISED OUTLINE WHITE LETTERING
• MASSIVE TREAD BARS, GIVE THE MAXIMUM TRACTION IN MUD AND A SMOOTH RIDE ON HARD PACKED SURFACES
• SPECIALLY DESIGNED TREAD PATTERN CONSTRUCTED TO FLEX MORE IN MUD ACCUMULATING AREAS
• A FULL 1.5 INCH OF TREAD DEPTH 6 PLY RATING FOR WORRY FREE PUNCTURE RESISTANCE
• RIM GUARD FOR MAXIMUM PROTECTION
• REINFORCED CARCASS RIDGE (RCR) TECHNOLOGY DELIVERS STRENGTH, REDUCES WEIGHT AND SHEDS MUD
• STEP-DOWN TREAD PATTERN ADDS TO THE LUG STRENGTH WHILE DECREASING TIRE WEIGHT
• DEEP SHOULDER WRAPPING TREAD BARS GIVE THE TRACTION NEEDED TO PULL THROUGH DEEP RUTS
  
  * More sizes to become available