P215/45/17 or P205/50/17

I managed to get my hands on a set of Persona Rims and have been trying to decide on what tires I wanted to mount on them. I've read some good reviews for the Michelin Primacy MXM4 but they are only available in 215/45/17. I was thinking about going with 205/50/17's as I have read that they will be smoother, give better gas mileage and fill the wheel well better.

Has anyone gone this route? What brands/makes did you consider and has there been an impact to your gas mileage?

Thanks

 

Thanks, Are the Yokos a low rolling tire?

 

Well, I decided to go with the MXM4 Primacy's. Discount Tire beat an online price I found and they had a promo for a $100 Pre-Paid Visa card to boot. So what pressure should I have them inflate the tires too?

 

I had the tires & rims installed today and I immediately noticed the difference in both appearance and performance.
The ride is defiantly more harsh, but the car is more stable at higher speeds and there is just a tad bit more noise when braking. All in all, I think the improvement in looks makes up for the harsher ride.