The way I look at it:
245 to 285 = +40mm width increase in the front
285 to 325 = +40mm width increase in the rear
So far, nearly 10k miles on this setup, on my otherwise worn out rear tires (camber wear). However, at the front they can keep on rolling on their unworn, outside portion of their tread for a quite a while longer...atleast another 10k I'd say. That's 20k on otherwise garbage rear tires, not bad...only problem is I can only do that once. Can't move the 325s in the front when they wear out lol
