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Message: <blockquote data-quote="Earthwerks Unlimited" data-source="post: 10651" data-attributes="member: 1300"><p>I get about 200-250 hours out of set of 12 ply tires which run $1000 fo five (a spare of the same size and make is ideal to preserve the drivetrain). I was cleaning up Hurricane Katrina for a year and a half and went through three sets of tires and a set of steel tracks. I went about 3 months without a single tire leak. Then I had a rash of them---angle iron, water pipe, sewer pipe, rerod--you name it went through the side walls and ruined all of them. Turns out NH used a specially-sealed tires from the factory with a polyurethane gel (which I have been able to successfully replicate in my kitchen!). The tires sodl new for $460 EACH plus tax, shipping, and mounting. My '05 New Holland LS185.b uses according to the manual 2.9 gallons per hour--that alone is over $10US an hour just for fuel at today's costs. For empirical data for depreciation, cycle times, and a myriad of other helpful info inclduing fuel usage, Caterpillar publishes a Performance Handbook. It covers all their makes and models--even out-of-date models.</p></blockquote><p></p>