AND the weight. Add weight to the to the beam unless you have a spare and tools in the frunk. I have 26 pounds added to my car. 6 degrees of caster (2 shims per side). Front sway bar and rear camber compensator. You need all that stuff.
Radial tires 22psi front 26 in the rear.
I guess you did mean over 60mph and not 60 y.o. for the driver. We couldn't help with that.
I couldn't resist