I couldn't see a thread devoted to security measures which could prevent your car being stolen so I thought I'd at least start a helpful discussion. Preventing having stuff stolen from your car is common sense - don't leave it unlocked, close the windows, hide or remove valuables, don't park it in an isolated place etc etc. What about stopping your car being taken completely? There is the obvious threat of 'two in one" burglaries which I, as a criminal barrister, have seen a marked increase in over the last 5 or so years. Again prevention is obvious - hide keys and don't leave them on the inside of your door (you'd be amazed how many people do that) or within a fishing rod distance of your letter box (another method). However the latest worrying trend is electronic devices which fool the car into believing a thief has the key. That RS4 video in another thread shows it at work. Now we can sit and rightly complain Audi ought to address this but that could be a long and fruitless wait. A tracker may be of some use but thieves usually find and disable them quickly (especially if your car has the sticker saying it has a tracker!). I am interested in views on other devices such as Disklok, wheel clamps or the like. Having a visible preventative device is going to deter a thief at the very least. If the thief has 2 cars one of which is a pain to steal he will go for the easy option. Car thieves want to be quick. Do you use such a device. I was looking at the potential for a Disklok but in another thread someone said it chewed his BMW leather steering wheel. Have you experience? What about those wheel clamps? Do they damage alloys? This could be a helpful discussion and I look forward to hearing your views.