Riding lawn mowers are susceptible to flat tires due to the terrain they are used on. Glass, roofing nails, screws and stray pieces of wire all can easily penetrate the thin rubber of mower tires. Thankfully there are products designed to repair holes in tires. However, as the rubber on the tire wears down, holes are not so easily fixed. Instead, a new tire should be installed on the mower. Changing a riding lawn mower tire is easy. Save yourself repair costs, and do the job yourself.
Park the mower on a hard flat surface, such as a driveway. Engage the parking brake, and place a chock behind each front tire if the tire you're changing is in the rear. If the tire you're changing is in the front, place a chock behind each rear tire.
Using a lug wrench or impact wrench, loosen the lug nuts two complete turns each.
Position the floor jack in the middle part of the frame, at the rear of the mower, if you're changing a rear tire. If you're changing a front tire, position the floor jack in the middle part of the frame at the front of the mower. Raise the mower approximately twelve inches.
Continue loosening each lug nut until they are all off. Slide the tire off the rim.
Line up the holes in the new tire's rim with the threaded studs on the mower. Slide the new tire into place, and hand tighten each lug nut.
Using the lug wrench or impact wrench, tighten one lug nut. Next, tighten the nut that is directly opposite the first nut. Tighten a third nut, and then the one directly opposite it.
Lower the mower by releasing the floor jack. Tighten each lug nut again. Check your new tire's air pressure, and add air if necessary.