I've recently bought a second hand Vectra, and was surprised by the handbrake behaviour. If you are rolling slowly forwards, and slowly apply the handbrake, nothing happens until suddenly both rear wheels lock up. Also, while the car is still, and the handbrake fully on, you can roll the car backwards and forwards an inch or so. I always thought that a handbrake was intended to work as a secondary braking device in the event of the main brakes failing, but it would obviously be dangerous the way mine are working. However, it's just had an MOT so either this was missed or it is acceptable (surprisingly). So, as I'm a fairly advanced home mechanic I thought I'd take a look. It's a slightly strange system where the main braking is provided by a disk, and the handbrake by a drum. Anyway, from what I see of the design, the behaviour above is exactly what I'd expect. The cable operates on a lever which is fully floating, which forces the drums apart. As the cable tightens, it will pull the front shoe forwards, off the block that it rests on, until it meets the drum. Because of the forwards motion, the front shoe will want to follow the wheel direction, downwards, which will result in both of the shoes rotating slightly with the wheel. But what this causes is the floating lever to be moved to the rear, effectively increasing the tension in the handbrake cable pulling from the front, and applying more braking force. There is therefore a runaway situation which results in a rapid change between no braking at all and a locked up wheel. Anyway, I fully dismantled and cleaned it, and fitted new shoes, and adjusted the top adjuster as well as I could, and was not surprised to see exactly the same as before. Is this really normal for a Vectra? Thanks