Just got my Z out today as it was really dry and sunny, gone a couple of miles and booted it round a large roundabout  (stiil got the horrible bridgestones on)  sure enough the old girl went completely sideways,Only thing was when I corrected it it went the other way even worse ..  
           When I regained composure  ..all the traction control lights were on ,Slip light as well also rev counter had packed up along with temp gauge !!!   Drove on , car ran OK ,no probs there just the slip and traction warning lights  permanantly on along with none functioning temp guage and tacho ., Drove to a layby and switched on and off a couple of times and everything was normal again   Gave the old girl a good caning all the way home with no further probs... Whats that all about then ? ,anyone had a similar gremlin in the works ?