You can do the experiment, but be careful to observe for any pinging from the engine. If you do hear it stop the experiment and go back to the higher octane fuel.

There are a number of things you can do; it really depends on how much money you want to spend. You could start by increasing the tyre pressure by three or four psi above the recommended pressure and see if that is enough to do what you want. Beyond that you could fit sportier tyres, you could fit harder suspension bushes, lower the suspension, fit better shock absorbers, and heavier anti-roll bars. If you do want to modify the suspension I would suggest you consult a specialist such as Pedders or K-Mac.

YOU can use it without any problem. If the ethanol content creeps up to 25 per cent or more in the future then you would need to be careful, but that's not on the horizon.