Hello everybody
Tyres and tires are not the same
I mean that products available in different parts of the world are adapted to local needs and tastes. In the US, the trend towards wide/low profile tires has eradicated the availability of quality performance tires in any profiles above 60. In Europe, it is still possible to buy good quality 185/70R14 tyres with an H rating.
The tire size and type can transform how the car feels. It all depends on your tastes and what you use the car for. 165s (which are an 82 profile) will give you a light steering and agile feeling, which is what Alfas were known for when new. Beware, the choice in that size is slim; stay away from the chineese crap. Vredestein Sprints or repro Michelin XAs were both good tires in the 70s, albeit not cheap now - especially the latter.
195/60 offers a wide selection of high performance choices, including some streetable race radials. They do lower the car somewhat (about 3/4"), and the engine will rev 6% faster at any speed with an equivalent error on the speedo. This is definitely the way to go if you want to use the car on the track. Some people claim the extra stresses of very wide, sticky tires can cause the Burman steering box to develop cracks. I've also found on my car that wider tires have more of a tendancy to track in deeply rutted roads, such as we have over here with the heavily loaded trucks that are everywhere.
A quality 185/70 is a good compromise when available. I would stick with an H rated tyre as this is a good way to filter out the more mundane brands intended for mundane vehicles. On this side of the ocean this size is frequent on Honda Civics and half dead Ford Tempos - nothing exciting. I've got some poorly choosen tires on my car now and the sidewalls are so soft I felt the difference within 1/4 mile of driving out of the tire shop. They will be replaced soon.
Ideal choice is a set of XAs on original wheels AND a set of racing rubber on GTA mags.