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noel993
Silverstone


Joined: 15 Jan 2009
Posts: 105
Location: Manchester


PostPosted: Wed Mar 27, 2019 7:32 pm    Post subject: Tyres Reply with quote

I've Michelin PS2 n3 on the rear and front what's the difference with n3 and n4 and can I use n4 on the rear
 
  
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Rhodris-dad
Hockenheim


Joined: 28 Nov 2013
Posts: 637
Location: RHYL

2015 Porsche 991 Carrera 4 GTS

PostPosted: Wed Mar 27, 2019 8:26 pm    Post subject: Re: Tyres Reply with quote

noel993 wrote:
I've Michelin PS2 n3 on the rear and front what's the difference with n3 and n4 and can I use n4 on the rear



Got this off Rennlist

esy of Tire Rack..

Production tires that have passed all of the tests and received the engineering department's release can be branded with an N-specification. The N-specification brandings include: N-0 (N-zero), N-1, N-2, N-3 or N-4. These markings on a tire's sidewall clearly identify them as approved by Porsche for their vehicles. The N-0 marking is assigned to the first approved version of a tire design. As that design is refined externally or internally, the later significant evolutions will result in a new generation of the tire to be branded with N-1, N-2, N-3, etc., in succession. When a completely new tire design is approved, it receives the N-0 branding and the succession begins again. Wink
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asterix_the_gaul
Barcelona


Joined: 20 Dec 2008
Posts: 1253
Location: Cheshire

1999 Porsche 996 Carrera 2

PostPosted: Thu Mar 28, 2019 7:40 am    Post subject: Reply with quote

Porsche recommend only using the same N rated tyres all round, but they would.. They sell more tyres at service time
The fronts take a good while to run down vs the rears so it's worth checking the age of the tyre from the dot code, on very old tyres the rubber can harden over time and be past it's best although perfectly safe/mot passing

Essentially there is no real issue with mixing n3 and n4 tyres fronts/rears as long as your ocd can handle it.
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2002 E46 M3 Cabriolet, Laguna seca blue/LSB
 
  
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noel993
Silverstone


Joined: 15 Jan 2009
Posts: 105
Location: Manchester


PostPosted: Thu Mar 28, 2019 5:37 pm    Post subject: Reply with quote

Thanks everyone for that, so in theory n4 should be better than n3 or am I missing the point, but at my tyre garage were I go n3 are dearer than n4, it's doing my head in lol
 
  
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T8
General
General


Joined: 29 Jun 2010
Posts: 15277
Location: Kent


PostPosted: Thu Mar 28, 2019 5:47 pm    Post subject: Reply with quote

The N rated thing is explained here

--> http://911uk.com/template.php?page=3
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ex 2004 Polar Silver 996T Tiptronic
ex 2002 Seal Grey 996.2 C4 Tiptronic
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jerzybondov
Monza


Joined: 27 Apr 2015
Posts: 162



PostPosted: Sun Mar 31, 2019 4:07 pm    Post subject: Reply with quote

Or just sack the whole N-rated thing off and get some newer, better, rubber on there (PS4 or PS4s depending on your wheel size).
 
  
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Magic919
Suzuka


Joined: 05 Jun 2013
Posts: 1048
Location: Berkshire


PostPosted: Sun Mar 31, 2019 4:50 pm    Post subject: Reply with quote

There was a 911 model where it left the factory with different N rating numbers front and rear. 997 GT2RS I think. I’d take no notice.
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