than were installed on your car, I would keep the ones you have. The OEM German steel doesn't usually weaken over time, and the spongy ride is due to worn shocks.

Measure the ride height of your car, and unless it is less than specs, the springs are fine (weak springs would cause the car to sag-if it isn't, then the pounds/inch of deflection hasn't changed from new).

Bob
I know that I need new shocks and probably springs. Ye O'le 86 735 now has 147k and the ride is real soft and spongy.

I really would like a little stiffer ride but not alot more than stock. Just something to make handleing a little better.

I found the H&R site and can but a set of springs for $295.00 but these change the ride heigth by 1.6 inches.

Have heard of Dinan Springs but have not found any info on them or where to buy them.
Jon,

I would advise you to check out the factory Mtechnic springs. They are available for an 85 745i from Maximillion for about $100 each. Lower the car about .5 to .75", and will work with Bilstein HD's.
andre
85-745
Any information and help is greatly needed and thanks in advance. Also help on shocks!!

Jon
86 735i