Join Date: Feb 2009
Location: Northeastern BC
My 2 cents -- unless you mainly do a lot of highway driving, the main difference will be the speed at which your automatic transmission shifts at. I don't think it will affect your mileage very noticeably.
I remember reading an interesting article (can't remember where, sorry), written by a GM engineer. He explained the whole question of axle ratios vs. fuel mileage. The upshot, as I recall, was that while a higher ratio will *theoretically* decrease your mileage, based on their real-world studies, in *practise* people generally don't see a whole lot of difference in mileage. Pretty negligible usually.
I've got a 4.10 rear, so that made me feel better.
If Princess Auto were a real girl, I'd ask her to marry me.