Off-the-road (OTR) tires are a specific classification of tires that are used with tractors and other forms of heavy machinery. These tires are large and feature different treads than regular tires to allow the vehicle’s operator to use them where normal tires would fail. Because these tires and the vehicles they are used on are so much larger than a standard vehicle, the changing process requires a bit of extra work.
STEP 1: Park the machine on a flat, level surface. Place tire blocks in front of and behind the machine’s wheels to prevent it from rolling.
STEP 2: Jack up the machine with a hydraulic jack. Place an appropriately sized jack stand underneath the machine to support it during the tire-changing process.
STEP 3: Remove the tire’s valve stem core and deflate the tire.
STEP 4: Drive a tire iron between the outward-facing tire bead and the lip of the tire’s rim. Slide the tire iron back and forth along the rim to loosen about six inches of the bead.
STEP 5: Insert the bead buster between the tire bead and rim. Lock the bead buster to the rim and use the drive ratchet and socket to turn the head on the tool and separate the bead from the rim seat.
STEP 6: Repeat Steps 4 and 5 for the tire’s inside-facing tire bead.
Apply the tire-mounting lubricant to the tire’s inside and outside bead and bead seat area.
STEP 7: Lock the machine’s tire with the valve hole on top and insert two long tire irons between the tire bead and the rim. Pry the bead over the lip of the rim. Work your way around the tire until the entire outside bead is pried over the rim lip.
STEP 8: Remove the tube from the tire.
STEP 9: Insert two tire irons between the inside bead the outside rim of the tire and pry the tire completely off the rim.
STEP 10: Lubricate the inside bead of the new tire and place the tire on the rim so that the inside bead is partially over the rim flange. Insert a tire iron and pry the inside bead over the rim flange.
STEP 11: Insert the tube into the tire and place the valve stem into the valve hole. Slide the tube completely over the rim and put a small amount of air in the tire (about 1 PSI).
STEP 12: Lubricate the tire’s outside bead. Insert two tire irons between the tire’s outside bead and the rim flange. Pry the tire’s outside bead over the rim flange. Work your way around the tire until the entire tire is on the rim. Pull the valve stem completely through the valve hole and secure it with the rim nut.
STEP 13: Lower the machine so that the tire is centered on the rim. Slowly inflate the tire to seat the beads into the rim. Do not inflate the tire to more than 35 PSI. Once the beads are seated, deflate the tire completely and refill it to the manufacturer’s specifications.