Quark
Full Access Member
PSI is at spec and I do not have magnetic ride (I wish). It just seems to transfer the road more than it should. Maybe my tires are stiffer than they should be, who knows. I think this is one reason why I've had so many issues with interior creaks and rattles. The stiffer the ride, the more rattles..
Run the tires at 1 or 2 psi below cold recommended tire pressure it will make a huge difference. I go by the warm pressure, 33 or 34 at highway speed is high enough for me. The pressure rating is part of the cafe standards and it's all a trade off including tire wear whatever is important to you.
A good balance of performance, economy and comfort : 5.3L, 20" tires with aforementioned pressure running 87 octane. You can run 500 miles before the next fill up in relative comfort without breaking the bank, at least before they shrunk the gas tank.