I have a base 986 and when I get above 55mph or so it sometimes will begin to sway from side to side. This isn't something that happens every time I drive, but it comes and goes. I haven't taken it to a shop yet but I suspect that it may be an issue of uneven wear in the rear shocks. This is my 1st Porsche and I have no clue where to begin, but I would rather ask questions here, than to be RAPED at a mechanic without any info.
*its a 98
*it has aftermarket 19" wheels
*its got a salvage title, but the frame has been professionally straightened