Total noob here I'm afraid... I bought a 2003 XR400R recently and thought I'd get my hands dirty as I want to learn as much as I can about the bike. I changed the tyres myself but when fitting the wheels on again I've noticed that the brakes "hiss" when the wheels turn. Trouble is I can't remember if they did when I bought it or not. I followed every step in the Clymer manual and I guess now I'm stuck - is it normal for the brakes to emit a hiss when the wheels are turned or should the wheel turn completely freely? Any help would be appreciated, cheers.