I've just swapped my offside wheels from front to back, as the front was more worn than the back. When I took the front wheel off, I noticed that the outer driveshaft boot was split. I presume that means that lubricant will escape from the joint and dirt will get in. Does anyone know if that counts as an MOT failure or is covered by Audi warranty - or if there's any way of easily repairing the boot without removing the driveshaft? Thanks, Graham.