Why is the ride unsettled in my 1990 Saab 900?

I have recently purchased a 1990 Saab 900 auto. It has travelled 126,000 miles.The full service history does not show any replacement of suspension parts. The ride is unsettled and it rolls when cornering...

Could you suggest a small, comfortable car with wide-opening doors?

I need a small, easy to drive car for my parents. They have severe back problems and need soft suspension and, ideally, wide opening doors. If it was economical that would be better - but comfort is more...