Anyone made the change to 15" wheels? I'm looking to get a set of winter tires, which will be going on the factory alloys (they aren't in the greatest shape). Rather than swapping tires on the same rims twice a year, I'd much rather buy a complete second set of wheels/tires. The 15" would likely be my summer tires, though depending on tire pricing, the 15" may become the winters too. Just curious to see if anyone has done it and what they've discovered, if anything. The main thing I'd be curious about is MPG changes. A lighter aftermarket wheel is likely out there, though I am not sure how heavy the factory alloys are.
