Tires are most likely the culprit. I had some low profile Dunlops on my 944 awhile back, and they grabbed every little ripple in the road. Ruts in asphalt roads and transitions to off ramps were killer, especially under acceleration or breaking.
95' Contour SE ATX - Killed by rogue whitetail
97' Cadillac Catera
98' Expedition XLT 4x4
