Just read Car & Driver Drive data on The i3..I have read endless reviews of how skinny tyres don't give much grip..
The i3 went round a slalom course max speed 39.3 Mph Braking Distance 163 Feet
Ford Fiesta ST 41.3 mph Tyre 205/40R-17 Braking Distance 172 feet
Mini Cooper S 39.9 Mph Tyre...