NCT?
Seemed as a money maker when first introduced.
It is the NCT. As they don't repair the car in any way there is nothing for them to gain by telling people to replace parts which don't need replaced. I've always found them fair enough to deal with. They do have the power to ground a vehicle if the defect is serious enough but this is the first time I've ever come across anyone who had it happen so I can only assume the tyres were in a terrible state.
I'm just questioning how someone could have tyres so badly worn and not notice and also not see why it is a safety critical issue. If the tyres were just simply worn slightly more than the limit or maybe one had a cut or other localised damage that isn't always that obvious if it's on the inside of the tyre. I could understand that and how it could be missed or over-looked.
Many drivers have no idea whatsoever how their car actually works. I understand that. I don't expect every car owner to be able to strip and re-build the engine and gearbox. This is very basic stuff. BMW would have supplied an owner's manual with the car which will have advice on things to check between services - including tyre condition. For most people a car is a big investment. Taking an interest in the thing and maintaining it correctly will make it last longer, make it more reliable and also safer in normal use. I cannot fathom the mindset of someone who refuses to do so. Driving is much more enjoyable and safer in a well maintained car.
There again, I cannot fathom the mindset of the middle-aged guy I see around town regularly on an early Peugeot mountain bike with the arms of the canti brakes dangling uselessly out to the sides as the straddle wires must be broken or disconnected. It is not expensive or particularly difficult to re-cable canti brakes so why ride around dragging your heels to stop as he does? The bike was originally equipped with the means of bringing it to a halt so not fix it? He'd find cycling would be more enjoyable and safer if he serviced his bike. It's true he's only really a danger to himself and he rarely above walking speed but it is still a stupid thing to do.
Why can't people take responsibility for their own actions and maintain their vehicles in roadworthy condition (and operate them in a safe and courteous manner) or else get off the road?