About a month a go my wife said the car made a noise like the car was dragging a bush so she pulled over and nothing was there. I questioned and she said it was while going right around a roundabout. Being Milton Keynes I took the car out and couldn't replicate it. Today and many miles later I had the exact same brown pants moment while going right on a roundabout. As soon as I straighten up the noise is gone. I pull over, nothing's hanging, no leaks smell and all seems fine again. It sounds like a mudflat dragging on the Tarmac. - used to have this with a 3rd Generation Astra. Could an out of line rear wheel dragging cause such a scary noise? If I didn't know better I would say it was a bearing grinding but surely it would flag up more frequently. One thing I've noticed is both rear tyres were new when I got the car and now the rear right is close to illegal. In MK right tyres are common for wear due to the roundabouts. I'm happy to get a 4 wheel laser alignment but should I get the rear adjustable camber arms fitted first. Have you had them fitted and noticed a difference?