TYRE PRESSURES PIRELLI PZERO ASIMMETRICO ON 348

Hi,
I wonder if anybody knows the recommended tyre pressures for Pirelli PZero Asimmetricos on a 348 (original wheels and tyre dimensions).

 

Thanks vary much for the input!
Are that officially recommended pressures, and in that case, where did you find them, or they your recommended pressures?
Thanks,
Lars

 

Hi again,
There are no recommended pressures for PZero Asimmetricos for the 348 in the workshop manual, that's why I wonder if anybody's got, or knows where to find, factory recommended pressures. I've contacted both Ferrari and Pirelli, but they haven't got an answer.

These are my own experiences, if anybody's interested or wants to compare notes: I first tried the same pressures as recommended for Bridgestone and Pirelli P700 for the 348, but the car felt nervous and wobbly, both on straight and winding roads. A tyre dealer told me PZero Asimmetricos have a pretty hard core and advised me to go down 0.3 kg, which means 2.2 front and 2.4 rear, which transformed the car. After a period I went down to 2.1 front and 2.3 rear, which I also liked. I could, however, feel a tendency to understeer in really tight curves. When speaking to a Ferrari workshop mechanic recently, I was surprised to get a suggestion to go down even further in pressure and not having more at the rear than at the front. I've now tested to 2.0 front and rear for a couple of sessions and I quite like it. The car feels "sticky" and neutral. I'm going to test to go up to 2.2 at the front and keep 2.0 at the rear, as is recommended for Asimmetricos on the 355 and 360, as soon as possible. FYI I'm only talking about driving as fast as possible on really winding country roads.

These are the recommended pressures in the workshop manuals for the 348, 355 and 360 (front/rear):
348 215/50 17 255/45 17
Bridgestone RE71:
2,4 / 2,6
Pirelli P700 Z
2,4 / 2,6

355 225/40 18 265/40 18
Bridgestone Expedia S-01:
2,5 / 2,2
Michelin Pilot SX MXX3:
1,9 / 2,1
Good Year GS Fiorano:
2,6 / 2,3
Pirelli PZero:
2,2 / 2,0

360 215/45 18 275/40 18
Bridgestone Potenza SO2A:
2,0 / 2,0
Michelin Pilot Sport:
1,8 / 1,9
Good Year Eagle F1 GS Fiorano:
2,2 / 2,2
Pirelli PZero:
2,2 / 2,0

Lars

 

Thank you! Very interesting! I'll check it asap.
When you say: "Manual says 2.4 & 2.6" i suppose you mean Bridgestone and P700, not PZero Asimmetrico?
How come you run such a high pressure as 2.7 on both ends?
And, have you found that the car feels best with the same pressure front and rear?
Thanks,
Lars

 

Merci pour votre information! Mais je me demande que vous voulez dire le contraire – 2.5 arrière et 2.3 avant? Ferrari recommendent 2.6 arrière et 2.4 avant pour les Bridgestone.
Merci,
Lars