Your car should have Pirelli PZero Nero A/S tires and not surprised you want additional grip.
You won't sacrifice any safety, by NOT going "Z" rated, so long as the tires are rated for your vehicle weight and size of wheel. You may not realize it, but you are sort-of looking in two different directions for new tires. You would like to enjoy the corners, but a harder or "stronger" tire, tends to give one less of this enjoyment.
My question is this..... speaking STRICTLY of cornering and driving performance, are you happy with the tires you have now, prior to them being in need of replacement?
Jazzer
