My 57 Belvedere has new Hankook Optimo tires and KYB shocks. When driving it drives straight and firm except on coarse or weathered asphalt. I can really feel it in the steering wheel. It's great on smooth asphalt. Is that tire pressure or the nature of torsion bar suspension? The original recommendation for pressure is like 24 psi cold. But that was in 57. What should I be running these radials at? They're at 30 now.
