Before you spend a fortune importing some michelins - have a think about getting some standard 15" rims converted to a 5.5" width. 15x5.5 is not exactly common, but not that rare. I've had quotes from a wheelwright to supply and fit either 5" or 6" rims to my standard centres for about $150. About half that cost is the rim. However, I am looking to get some 5.5" rims off an Astra, Honda Jazz, Hyundai etc and use them for the conversion. A world of great tyres opens up at these widths, starting with 175/60R15 for the fronts and 185/65R15 for the rear. This combo will lower the front ever so slightly and give the swing arm rears a little more squish. The look from the side of the car will be almost identical to stock tyres in terms of sidewall height and rim size. These two calculators are very useful for playing around:
https://tiresize.com/calculator/ to compare the dimension of a tyre choice with the standard tyre size
https://www.wheel-size.com/calc/ to see if a new tyre/rim will fit and help you calculate the correct offset to keep handling happy
Just a thought!