One big caution, here. If the tires are loaded (with CaCl, water, antifreeze, beet juice, whatever) everything Allan said goes double. Don't try to manhandle a loaded rear tire. You'll lose. IFFF they're not loaded, yes, the bolts holding the rims to the wheels will allow you take the tire and rim directly off, as long as the brackets on the rim are mounted on the outside of the wheel. If they're mounted to the inside, call the tireman and have him come out and do the job right on the tractor like ALlan suggested. I don't remember the configuration of the brackets on the 450, and maybe you could finagle them off, but you run a chance in tryin' of knockin your tractor off your blocking, jack or jack stand and then you'd have a real mess. You'll need to jack it higher and let it back down onto blocks to do it right, and the blocks need to be the right height to allow you to slip the rim with the new tire back on. Don't be hossin' tires off and on with the tractor resting on jacks or stands. ONLY if the tires aren't loaded AND ONLY if the lugs/brackets are to the outside of the wheel AND ONLY if you have enough wood blocking (IT takes auite a lot to cross-stack up to the bottom of the axle on an 450) to support the tractor while you're hossin' tires and rims off and on would I say it would be okay to take them off yourself and drive them to the tire shop. Otherwise, have the pros come pay a visit.
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