It's so subjective to the vehicle you drive and the roads you drive on.
My Explorer used to chew through tires seemingly faster than it would go through gas. The worst was when I was experimenting with higher pressures. The increase in fuel economy was NOT worth the uneven wear and more importantly not worth the degradation in comfort, control, and safety. Bouncy tires were more than likely also a factor in blowing my shocks *again*, and blown shocks would have definitely been a factor in worn tires. It's a vicious cycle.
Now that I am driving a car the tires cost half as much and are seeming to last 4x as long, and I am able to bump up my pressure a bit past the vehicles recommended pressure without noticeably affecting the ride. In the time I would have killed a set on my Explorer the tires on the Versa look to be in 70-80% condition with nice even wear.
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