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According to P101TV we all need N-rated tyres. I can' check right now if I have N rated tyres but knowing the PO, I don't. Do you?

http://www.p101tv.com/page.php?page=98

Rob Edwards

[old crusty 928 owner] Al Holbert went for a cruise at 172 mph on non-N-rated tires and lived to tell about it, why do we need N-rated tires now? [/old n' busted]

No N-rated tires here. Sumitomo HTR-ZIII's. Love them in the dry.

Dictys

yep, my continentals are N1 rated, says it on the sidewall, i think it means that porsche has tested the car on those tyres and therefore approved.

Nicole

There used to be a requirement in Germany to have factory approved (N-rated) tires on your Porsche, but the EU voided that requirement.

jorj7

No one seemed to care that I ran non "N" tires in Unlimited Tech speed ORR classes for the last 8 years. They only cared that the tires were (Y) rated and less then 2 years old.

George
90 S4 Grand Prix White (Murf #5)
94 GTS 5-Speed Midnight Blue
http://928.jorj7.com

Leon Speed

Yes I do. Want to avoid any possible difficulties with TUV and the insurance company should it ever come to that. Price-wise there's no difference.

Imo000

N rated tire are supposed to be for the rear engine Porsches. Something to do with slighly stiffer side walls or something like that but even those guys hardly use them. They are more expensive than the same brand/model non N tire.

Hilton

Not much choice in N-rated tyres available in the stock S4 sizes (245/45/16 and 225/50/16). Conti Sport Contact might be the only ones now?

Dictys

There is also Bridgestone Potenza S-02 245/45 ZR16 ZR N3 which are still available

Jim M.

My rears (315/30x18 Michelin PS2) are N4's, the fronts, Michelin Super Sports are N006 (255/35x18)

sendarius

From my experience when buying new shoes for my 944, the N-spec tyre is VERY different to the "same, but not N-spec" tyre.

As an example the Bridgestone S-02 N-spec 225/50R16 had a measured tread width of 222mm, while the normal 225/50R16 had a measured tread width of 187mm.

According to Bridgestone themselves, they use tread-width as a variable in tyre construction - it doesn't have to match the section width quoted in the tyre dimensions (and usually doesn't), and they change it as necessary to make the tyre meet the design requirements.

gruffalo

My bridgestones are N3, I run 225/255 on stock GTS 17" Cup 2s

Ozvino

"Not much choice in N-rated tyres available in the stock S4 sizes (245/45/16 and 225/50/16). Conti Sport Contact might be the only ones now?"

Hilton not sure what's available now in Australia regarding S4 16 or 17 inch sizes if you have the cup rims but around a year ago I had no luck finding N spec tyres to fit. I went with Continental SC 3's and my understanding is they aren't N spec but they were Merc approved tyres for what it's worth

Very happy with the tyres

Dave

Hilton

I couldn't find N-spec here in Oz, so I was looking at the UK for N-spec 16" tyres for my 87 S4 (I'm staying with stock rims on that one). The only 16" I can find locally in S4 sizes are Toyo T1R for around $1k a set.

I have a set of 17" Cup II's (ET65 ex-GTS) on my other 928 at present, but will be changing to 18" on there once these Dunlop tyres are done.

Interesting comment above about tread width for N-spec.

polecat702

I've got Hankook VR-12's on my shark, and they're rated for up to 186mph. Faster than I'll ever go in it. Great ride and handling! A lot of the Ferrari guys are running them also.