The wheels only have a lifespan of about 2 years anyway and it's regular maintenance to replace them. They get serviced regularly on a lathe which is either sta

The wheels only have a lifespan of about 2 years anyway and it's regular maintenance to replace them. They get serviced regularly on a lathe which is either standalone or built underneath a service track. They can be pressed on and off the axles, which last like 80 years. Local asphalt repair is also pretty routine for replacing pipes and stuff. I too wonder what it cost but I bet it's surprisingly little.