I have a set of Mclaren on my New Holland and they have lasted great. had the rubber inserts at first, cost me extra :Banghead Don't buy the inserts if you plan on using your machine in stone etc. my inserts lasted one summer, but the tracks alone have been great. To take them of is easy, putting them back on sucks. You have to use a come along to get them back on. The machine is a whole new machine with them on, can do things that you would never be able to do with tires. Worth every penny, but like gotgreen says buy good ones. My cost around $2500 I think.