As it happens just yesterday was skid steer loader service day. Changed the engine oil and filters and greased both units. Hardly need to think about tyres these days, since starting to use Kenda Rock Grip tyres. They last between three and four times as long as most other brands. I used to wear a set out on each skiddy annually, so eight new tyres a year. They still get exactly the same work annually but tyres last between three and four years. They cost maybe 25% more than most other brands but they are worth it. My tyre man was fed up changing skiddy tyres so regularly so put me on these and we are both happy bunnies as a result.