I know this isn't going to be good news, but does anyone have an idea what this might be. When I'm driving my rear passenger wheel is making a knocking and grinding noise. It happens roughly once per rotation of the wheel for a second or two (at a guess), so not constant. Its as if something is catching but I don't know what. Is it possible it's the diff, or more likely to be something else? Had a quick poke around but can't see anything too obvious.
Cheers.
Cheers.