Yes, I know that everyone and their dog has reported this problem, but I'm starting to think that mine might be a little worse. I've got a '99 Miata I purchased back in July, and it has always had the 65 mph shake. I had new tires put on and asked them to take extra care when balancing the wheels. This seemed to make the shake all but completely go away. Over the past 6 months the shake has returned and gotten worse. I examined my tires and they were shot, looked as though the alignment was out. So I had the car aligned (which was severely out of adjustment as it turns out), then purchased new tires again last week. The shake has not gone away, in fact it feels like it is still getting worse...
It starts at around 58-59 mph and can go up as high as 75+ mph depending on what mood it is in. It is a hard shake, I feel it all over the car, seat, steering wheel, dash, mirrors shake, I can see the hood shaking relative to the road, and the entire inside of the car is rattling (the top hinges, stuff in glove box, basically anything that isn't welded). Not sure where to go from here, the guy I had align it said that none of the suspension/steering parts appeared to be broken or too worn, they were just badly misaligned. All tires are sitting at
29psi.Any ideas?
-Tim