On some (Honda, Mercedes, BMW, others) it's a pain because they install a screw through the rotor hat to secure it to the hub. Often it requires a hand impact to remove - if you use a regular screwdriver it almost always strips the head, making it even worse to remove. And then there's the ones where the wheel bearings are incorporated into the rotor, so it's messy to repack those bearings and easy to mess up setting brewing tension. Those (with bearings) are the most common to be neglected in my experience since they're more expensive in both parts and labor. Thankfully more companies are going to sealed bearings and floating rotors, making things cheaper and easier to work on.in my recent inspection of my car, my brake disks was 0.1 mm within the legal thickness.
So i will replace them soon, and not in 6 years.
And really changing brake disks, it is just about one of the most easy things to do on a car, but of course kids today dont learn gear head from the parents or who ever they can.
I had to learn from strangers, cuz my father dident even have a license.
I've got them on mine, but they are not a problem as long as you don't ever tighten them, they are not there to secure the rotor, only to stop it falling off while you put the wheel on, it is the wheel and wheel nuts that secures it.On some (Honda, Mercedes, BMW, others) it's a pain because they install a screw through the rotor hat to secure it to the hub.
As a former mechanic myself, I've actually seen some of these things in person. Scary.