My 72 Cutlass Supreme convertible wanders when the road has dips or uneven pavement. On a flat or level road, it drives straight as an arrow. I can take my hands off the wheel and it will continue straight. But it seems like if the road has a few dips, I have to chase the steering to keep it straight. I replaced all the bushings, springs and ball joints when I converted to (factory) front disk brakes. Any thoughts on what I should look at? It almost feels like the steering is on a rubber band. If it gets pulled one way or the other it's rubbery.

 

is the alignment set to the factory castor setting ? Increasing the caster makes the front wheels just want to go straight, i had my car aligned last year and the guy agreed more caster is better and he dialed in as much as he could get IIRC +2° on each side .

 

Take it to a reputable alignment shop. Have them set as much positive caster as they can get, .5* negative camber, and 1/16 toe in.

 

I'll have to get it realigned with more caster and see if that helps.

 

Inspect the inner/outer tierods pitman and idler arms the upper/lower control arm bushings and ball joints. Then get it aligned. Steering box lose?

 

X2 inspect the front suspension and steering components closely before alignment. Worn parts cannot hold the alignment, it will vary/wander constantly as much as there is movement in the worn parts.

Wide tires will increase following/tracking of road imperfections. What width and profile tires are in use?

Good luck!!!

 

BFG Radial T/A 225/70R14 on Factory wheels. 10 months old.