I have reasonably new Dunlop tyres fitted to the standard Rays at the front of my Z. At 60-70mph there is a strange rythmical droning sound coming from the front of the car (no it's not the other half in the passenger seat). It is quite loud and sounds bit like when you drive over the rumble strip on the motorway, although not as severe. It also comes and goes in waves randomly.
The weird thing is as soon as I go over 70mph is disappears and everything is smooth. The tyres have loads of tread and don't seem to be wearing unevenly, and the steering wheel itself doesn't vibrate.
Despite this could it be the tracking? It was checked last year but I guess one pothole could have knocked something out?
Is my car possessed by a speak-freak ghost?