2005 Kawasaki KAF400 Mule 600 and Mule 610 4x4 Service Manual, Page 211Get this manual
10-4 WHEELSTIRES Specifications
Item Wheel Alignment Toe-in Tie-rod Length (Distance Between Flange End and Locknut) Tires Standard Tire: KAF400-AC Front Rear KAF400-B Front Rear Tire Air Pressure (when cold): Front Rear KAF400-AC KAF400-B Maximum Tire Air Pressure (to seat beads, when cold) Tire Tread Depth Standard 20 mm (0 0.79 in at 1G about 34 mm (1.34 in Service Limit