Tire Sizes

I have a 2007 with the Touring Option.

The car came with 195/55R-16 size tires. I need to know if anyone has experince running 205/55-16 tires?

I called two Toyota dealer service departments and they don't recommend running the 205 tires.

Discount Tires and other tire distrubitors say it is ok to run the 205/55-16 on the Prius with the Touring option (according to their computor).

I live in Colorado and I'm about to buy winter tires on and there seems to be a better selection and price for the 205/55-16.

Thanks in advance for advice or personal experience in running 205/55-16.

Regards,

ScubaPrius <_<