I think 195/55R15 on the front are a good idea.
https://photos.google.com/photo/AF1QipM ... Z6E1IzVFEV
I Installed 195/60R15 on all four corners per above pic (hopefully my pictures work here). I did this because the stock tire size seemed like roller skates on the bumps I encouter on my daily commute and I wasn't real happy with traction of the low rolling resistance tires. I found a good deal on Cooper Evolution Tour TR tires that were rated M+S and high mileage as my Spark had cord showing on the 2nd set of stock fron t tires within 39k miles.
I wanted 195's because the 185's on the front allow the rims to hit before the sidewalls on curbs - the 195's help considerably with curbing.
The larger 60 series tires are only ~10mm (3/8") bigger radius and do rub slightly at extreme turning angles. The speedo now reads ~3% low. They ride considerably 'softer' over the bumps and have a lot better wet weather traction. Efficiency/range seems to be down a few percent.
If I had to do it over again, I'd probably try to find a high mile, high traction tire in the 195/55R15. There were more options in the 60 series, such as the Pirelli P4 and Cooper tires. I've also considered getting smaller wheels (Honda Fit, Mini Cooper, Miata all come with 14" rims with 4x100 bolt pattern) and trying a taller profile tire, such as 185/65R14, which opens up options. On the smaller, narrower rims curbing the rim with a skinnier tire is less of an issue but tire footprint wouid be reduced.
Clearance of the stock front wheels with 195/60R15:
https://photos.google.com/photo/AF1QipM ... _AwrZuVJXP
Brakes on front/rear appear to have almost no wear with 40k miles:
https://photos.google.com/photo/AF1QipN ... FFqQWD1guf