Ok, tire sizes 101:
You have a P195/60/14
This means:
P = passenger car
195 = 195 mm wide tread with
60 = sidewalls are 60% of the treadwidth (or about 117 mm high)
14 = 14" rim
The wheel size and tire size MUST match. You cannot use a 14" rim with a 15" tire or vise versa. EVER.
Now aside from the overall diameter, your tires are made to run on a rim that is anywhere from 5.5" to 7" wide. The "measuring rim width" for your size tire is 6"
The measuring rim width is the industry standardized rim width upon which the tire must be mounted in order to confirm it meets its dimensional targets. Because the width of the rim will influence the width of the tire, a standard rim width for every tire size is assigned and must be used. This standardized measuring rim width allows all of the tires produced around the world to meet the same dimensional standards and therefore, be equivalent with regards to their physical size. The measuring rim width is sometimes referred to as the tire's "design rim width".
I don't know how wide your factory rims are, but that would dictate how wide a tire you could go with. Overall you want to try to keep to the same overall diameter when the tire is mounted/balanced.
For example, your P195/60/14's probably have an overall diamater of about 23.3". You want to try to stay VERY close to that as you move around in tire widths/profiles and wheel sizes. A 205/50/15 has an average overall diameter of 23.2" - only 1 tenth of an inch difference from your factory tires overal diameter, but a wider tire with a lower profile.
There are a lot of considerations to be made when messing with oversized tires, or changing rims.
I'd STRONGLY suggest you talk with a tire shop that has a reputation for working with performance vehicles. You can get some very unpredictable (and disturbing) handling characteristics out of a car if you screw up with your tire/wheel package.
We haven't even gotten into offsets/backspacing issues, etc.
You have a LOT of homework to do before you can make these decisions. In the meantime lean on a pro for advice.