hope someone can shed some light on this. ive got an intermittent vibration, it comes every so often sometimes at 20 mph or at 80 mph. the wierd thing is that the frequency is the same regardless of speed. It sounds like a tyre catching but it isnt as with the lift the tyres clear everything by at least 6 inches and also the note would change as I went faster. All I can think of is the ABS kicking in, but as its only done it once when braking I just dont know, but I did feel it through the pedal. Any advice?