I'm switching back to summer tires on my family car tomorrow. And I'm eager to see what they're like around the hairpins. After all, you don't need a tonne of horsepower if you can carry enough speed ...

One example of BMW’s i8 is ditching the electric gubbins and getting B58 power. One-off BMW i8 is getting a 700-horsepower B58 straight-six swap, replacing entire hybrid powertrain. Custom subframes ...