Re: tires size and options
The car originally came with 195's, so if you merely replace with 205's you increase the diameter and, of course, the circumference.
All the instrumentation relating to travel (i.e. road speed, miles travelled, fuel economy etc.) will give you an incorrect reading and the gearbox will have to work harder (ratios were developed around the specified tyre size and although you probably wouldn't notice in first/second, the top gear response will suffer...).
I don't know how it might affect handling.