Hello everyone, I am a newbie here, so much great info. I just bought a 2012 Silver Prius III and coming from a Cadillac Escalade, it is a TOTALLY different experience altogether but I am LOVING my new MPG versus 14.8 I was getting on my Slade... Having said that, I hate the rims and tires with the hubcaps on my Prius and am looking to make it a little more bearable. I am looking to get either 15 or 17s but do NOT want to sacrifice my awesome gas mileage because that is why we drive Prius' in the first place. My thoughts are, if I go with 15s, I can just swap out the rims and keep the same LRR tires that came with the car. But will it even look as good as 17s? Is there that big of a difference in appearance between 15 and 17 rims? My other thought is, if I go 17, is there a tire out there that is just as good if not better than the factory in terms of LRR/MPG? I also see that some people drop their Prius a little, looks kinda cool, but does it affect gas mileage? Any feedback would be GREATLY appreciated! Thanks everyone... Any info or feedback would be appreciated.