spent roughly a month and a thousand kilometers on the road. March 2022 issue. The tire fitter had no issues with the balance. It was rough at first, but after some getting used to it became more gentle. I have experience with the Pirelli P1 after having driven for seven seasons. I gave it a score of 4 if you compare it to Pirelli's 5. Although it is worse and noisier, it is still reasonably priced. It's a Kalina 16v machine.