They are not transferable to a new owner after 40 years here by law. If is older the tractor can't be sold, and if sold privately couldn't pass the vehicle insp

They are not transferable to a new owner after 40 years here by law. If is older the tractor can't be sold, and if sold privately couldn't pass the vehicle inspection test later (that must be passed each six months, if I'm not wrong). Things can be different in your country. The main promoters of this idea are the independent diagnostic car machines makers. For the brand is a lot of risk and possible bad publicity. For the farmer the results can vary. Messing with its electronics could turn the tractor into a pile of garbage. Allowing the owner to mess with safety systems will typically lead to somebody realizing that can delay the repair for some months just inactivating the warning lights. People do the same all the time with car airbags. As farmers typically earn money after the harvest, they could be working for many months with a fake sense of safety. And as people love to brag, this could became quickly a popular option and a big mess