Needed new tires and I hated the LRR / Eco tires. I decided to order Yokohama S.drive's (185/55R15 and 195/55R15). Note that these tires are directional, so this combo cannot be rotated.
Impressions after 1k miles. Car is amazing to drive, minimal wheel-spin at full throttle, amazing cornering. In fact, I sold my MX5 miata, as I no longer drove it much. The Spark is that much fun. S.drives are way quieter than the LRR, car is silent now up to about 30 MHz.
The bad: I did lose some range. Meter usually around 67 miles on LRR, is usually around 62 miles for the S.drives, so around 5 miles of lost range.
Very worth it in my opinion.