Guys i think ive got a duff wheel bearing..... getting a knocking noise from the front wheels not sure which one as my hearing is ****. Knocking increases with speed and decreases under breaking. Started happening on the way to the ring and has continued since i got back obviously getting worse. Is this easy to replace and if so does anyone have a guide? could this be something else more concerning? Only other thing i have had done to the car recently was a drivers side drive shaft seal. any ideas ?