Re: Car wandering on motorway
While our surfaces are smooth, our lanes are very deeply rutted in many areas of the asphalt jungle around Seattle. My Tyer pressures are what they are, and my ride is smooth and with the least amount of trammeling I have experienced in this car. ( or any sports car for that matter)
I think the most recent diagnosis has been overrridden in pressure talks, and should be revisited. If your Tyers are good ( and Your good with your pressures) then it's possible that your steering wheel / column is in need of tightening. I have read that here before. Also the bushings might just be worn and cracked creating slop in the ball joints.
Look up the steeering wheel tightening procedure first, as it is cheaper than the damper.