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Would appreciate any recommendations as to the correct tire pressure(s).
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I don't know about "correct" tire pressure, but I like to run at the maximum recommended pressure, as shown on the tire sidewall. This gives best performance, at least in dry conditions.
On the other hand, there's nothing wrong with 32 PSI - or something close to that - for a good, general-purpose inflation pressure.
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Hi Reid,
My below statements are general statements. Optimum tire pressures will depend on the exact car, exact tire design, & intended use.
Running max sidewall rated pressure will likely not hurt anything on RADIAL tires, except for a harder ride. Inflating BIAS PLY tires above the pressure needed for the load WILL cause the tires to hump up in the center & reduce the contact patch.
On radial tires, higher inflation pressures usually increase the tire's grip. The BN1, BN2 with it's more rearward weight bias can be better balanced - oversteer/understeer - by higher pressure, more grip in the rear, lower pressure in the front. With a 3/4" front sway bar, I find that 28 front, 32 rear gives more neutral handling. Keeps the rear from coming out as much.
The sixes with more front end weight usually work better with more equal front & rear pressures.
The very low original "book" pressures for bias ply tires are too low for modern radials & will give much reduced stability. OTOH, Higher pressures in bias ply tires will just make them hump up in the center & reduce the contact patch. As you say, it depends on the tire & it's intended use.
D