Can TireRack explain Michelin/Porsche N-rating issue?
10-20-2011, 01:37 AM
#1
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Can TireRack explain Michelin/Porsche N-rating issue?
Four months ago bought 4 PS2 N1 tires for my 2007 Porsche Turbo. Rears now need replacing with 15K miles. Fronts go at 35K miles.
Now I find N1 discontinued and PS2 N2 only availble for rear at > 25% cost than N1s. Michelin says Porsche demands the N-rating.
These new Michelin PSS tires now out are almost half the price of PS2N tires. Question: what does Porsche demand for the N-rating that the PSS tires do not have?? In all areas of testing by Michelin, PSS tires out do PS2 N tires in wear life and comfort, but compare equally in braking/handling/fuel efficiency. What is the mystery in N-ratings that Porsche seems locked up with
Now I find N1 discontinued and PS2 N2 only availble for rear at > 25% cost than N1s. Michelin says Porsche demands the N-rating.
These new Michelin PSS tires now out are almost half the price of PS2N tires. Question: what does Porsche demand for the N-rating that the PSS tires do not have?? In all areas of testing by Michelin, PSS tires out do PS2 N tires in wear life and comfort, but compare equally in braking/handling/fuel efficiency. What is the mystery in N-ratings that Porsche seems locked up with
10-20-2011, 10:56 AM
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Turbo under warranty and needs 4 Tire Pressure wheel indicators at $125 each. Porsche has to put these on under warranty, but will only do that with N-rated tires. Apparently there are suspension-warranty issues otherwise and my dealer only puts on N-rated tires.
10-28-2011, 08:50 PM
#5
Rennlist Member
I don't think any of us know exactly what's involved in Porsche blessing a tire with the N designation.
A PAG spokesperson at the 2005 Parade told us that PAG had listed the tire's specs (some on construction, and some on performance) and submitted them to three pre-selected tire manufacturers. Later, PAG tested the candidate tires and found only one fully met those specs (that turned out to be the Michelin PS2), but the other two manufacturers eventually met the specs as well.
I'm not a stickler for the N-designation, especially with a tire like the Michelin Super Sport available.
A PAG spokesperson at the 2005 Parade told us that PAG had listed the tire's specs (some on construction, and some on performance) and submitted them to three pre-selected tire manufacturers. Later, PAG tested the candidate tires and found only one fully met those specs (that turned out to be the Michelin PS2), but the other two manufacturers eventually met the specs as well.
I'm not a stickler for the N-designation, especially with a tire like the Michelin Super Sport available.
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11-10-2011, 05:51 PM
#8
Former Vendor
Here's a good link explaining the N rating.
http://www.tirerack.com/tires/tirete....jsp?techid=26
Michelin does plan to eventually release the PSS with an N rating. It should be spring hopefully.
I hope this helps.
http://www.tirerack.com/tires/tirete....jsp?techid=26
Michelin does plan to eventually release the PSS with an N rating. It should be spring hopefully.
I hope this helps.
