New Pirelli PZero (PZ4)
Discussion
Radish said:
I have just replaced the P Zeros on my 981C with Goodyear Eagle F1 Asymmetric 2s (20" wheels); what a revelation - quieter, steering feels nicer and no juddering when manoeuvring! By the way, the Goodyears are Porsche approved (N0)
That's interesting, the Goodyear F1s have always been rated very highly, and my experience, on non-Porsches, has been excellent. So, N-spec is great news. One of their USPs is always been their low noise levels and compliant ride.
Now have fitted the new N1 Pzeros to my 19" wheels and covered quite few miles, though none in heavy rain or (obviously) cold conditions. Initial results are positive and at least some of improvements I felt the 718 had over the 918 are down to the change from N0 to N1 Pirellis.
A point to note (and what I thought was an error) the garage fitting the tyres inflated them to 33psi all round rather than 29/30 the 981 handbook recommends for 19" wheels. However according to my OPC the 718 pressures ARE now specified as 33 all round. Why this change of recommendation I don't know - though it did seem odd that the recommended pressures for 20" wheels should have been higher than 19s before.
My initial findings - some of which may be due to the higher pressures.
1) The steering is lighter and has more feel - not as good as the 718 in that respect, but now, for me, acceptable. (My steering feel has improved in any case as the miles have mounted, and is now clearly better than when new)
2) Front end bite is better and there is less initial understeer, and, probably as a consequence, the car is more throttle adjustable.
3) The rear feels a tad less planted - but nothing like as loose as it is on my winter dunlops. I regard that as a positive.
4) Contrary to what you might expect, the ride (PASM) has actually improved a little, though bump thump over sharp irregularities such as cats eyes is worse. (The N0s were outstanding quiet in that respect and the N1s are still good)
5) Concern was expressed by one poster about the lack of rim protectors. The N1 is much better than the N0 in that respect - despite the lack of rim protectors. The actual sidewall of the tyre projects beyond the rim noticeably more on the N1 than the N0 - so you are more likely to curb the tyre rather than the rim.
Unknowns as yet. Tyre roar (I have not gone on particularly coarse motorway services yet) and wet weather behaviour (though they seem progressive on damp roads)
The only real downside is the scrubbing on full lock seems to be just as bad as ever - and will only get worse as temperatures fall later in the year.
But, overall I'm more impressed than I expected.
A point to note (and what I thought was an error) the garage fitting the tyres inflated them to 33psi all round rather than 29/30 the 981 handbook recommends for 19" wheels. However according to my OPC the 718 pressures ARE now specified as 33 all round. Why this change of recommendation I don't know - though it did seem odd that the recommended pressures for 20" wheels should have been higher than 19s before.
My initial findings - some of which may be due to the higher pressures.
1) The steering is lighter and has more feel - not as good as the 718 in that respect, but now, for me, acceptable. (My steering feel has improved in any case as the miles have mounted, and is now clearly better than when new)
2) Front end bite is better and there is less initial understeer, and, probably as a consequence, the car is more throttle adjustable.
3) The rear feels a tad less planted - but nothing like as loose as it is on my winter dunlops. I regard that as a positive.
4) Contrary to what you might expect, the ride (PASM) has actually improved a little, though bump thump over sharp irregularities such as cats eyes is worse. (The N0s were outstanding quiet in that respect and the N1s are still good)
5) Concern was expressed by one poster about the lack of rim protectors. The N1 is much better than the N0 in that respect - despite the lack of rim protectors. The actual sidewall of the tyre projects beyond the rim noticeably more on the N1 than the N0 - so you are more likely to curb the tyre rather than the rim.
Unknowns as yet. Tyre roar (I have not gone on particularly coarse motorway services yet) and wet weather behaviour (though they seem progressive on damp roads)
The only real downside is the scrubbing on full lock seems to be just as bad as ever - and will only get worse as temperatures fall later in the year.
But, overall I'm more impressed than I expected.
Edited by bcr5784 on Friday 24th June 13:45
Ape50 said:
I recently replaced Pzeros with PSS and having just got back from a week in the Alps can say they are far better. No slides front or rear in either wet or dry conditions - I found the grip with the Pzeor average to poor. Also have found no juddering on full lock with the PSS. How can a tyre that is clearly so much better not be Porsche approved ? - it's crazy !
I'm looking to buy m p s s in 20 for my 981 S. I see they're available in either 88 and 92 load rating for the front. Do you know which you have?Edited by Ape50 on Wednesday 8th June 10:38
ATM said:
I'm looking to buy m p s s in 20 for my 981 S. I see they're available in either 88 and 92 load rating for the front. Do you know which you have?
The following are the OE values for the 981 on 20's:235 / 35 R20 88 ZR(Y)
265 / 35 R20 95 ZR(Y)
MPSS are available in these sizes.
AndyCGTS said:
ATM said:
I'm looking to buy m p s s in 20 for my 981 S. I see they're available in either 88 and 92 load rating for the front. Do you know which you have?
The following are the OE values for the 981 on 20's:235 / 35 R20 88 ZR(Y)
265 / 35 R20 95 ZR(Y)
MPSS are available in these sizes.
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