You wont notice a warped disc with the bear eye.I've done a video (audio is quite clear too) I'll upload it tonight - Silly 3G connection keeps on failing on me.
Silly question - If I take the wheel off would a warped disc be pretty visable? Or is it only a couply of mm? If I lay a straight edge (metal ruler or similar) across it would this be enough to pick up any high/low points?
Edit: P.s. Thanks for the replies
I had 'warped disc' but they didnt squeek, only massive, droning vibrations under braking.
I do think there's a tool you can buy to check it. Dont know how its called though, some else will come along and provide you with the info
i've also recently read that a warped disc is a myth. Its caused by uneven deposition on the disc by the brake pads resulting in a varying thickness....