tyres are the usual culprit especialy chunky tread ones that are running edges (one edge of a side chunk is higher than the other side of thesame chunk)caused by wheel alignment issues. wheel balance as well. there was a factory fix if I recall and it was a modded bushes in the front trailing arm and a steering damper, this was only done if all other avenues were exhausted. I worked at a dealer ship for about seven years and only did this twice