Question about N0 versions of Michelin Sport Pilot 4S. Is there a substantive difference between the N0 version of the tires and the same size/model tire that does not have the N0 designation. TireRack says no difference. Just marketing. I got the same message from the tire installer. Any information appreciated.

Yes there is a difference and its worth it. I will find the video that explains how manufactures get to specify their specs in compounds and how an N spec tire can be substantially different than the same time non-N spec

What he said.

This is the BMW equivalent explanation, im sure there is an N spec specific explanation but i think this gets the point across and it was faster for me to find.

Michelin works with many auto manufactures to design a tire specifically for their cars. How successful they are varies. If you want the best performance from your car, why wouldn't you spring for for the "N" tires on your Porsche? The dollar difference is negligible compared to the cost of your car.

If I remember right one of the big things with new tires is to make sure that you get a shop that hasa touchless tire mounting machine, otherwise you risk damaging your rims. I believe select* discount tires and lots of other various shops have them.

my first set of PS4S were NON N0 as they were not available at first release. Now I only run N0, but TBH I don't drive hard enough nor have done back to back road tests to know how the difference is in real world for normal people. I just like knowing that there was specific porsche engineering going into to tire and it's not just a P Tax.

If it’s not NO, I’m a NO go. Do it right or buy a camry.

This video boils down to "someone told me they're different and I believe them"

To the layperson, N spec versus any other spec will have no appreciable difference other than price.

And N0 is anyway now N1 and according to the dealer last time I replaced one, you couldn’t mix those either.

Compare the detailed specs of the PS4S N0 with the non-N0 tires in the same sizes on Tire Rack's site and you will see some differences in weight, tread width, tread depth, etc. It doesn't say whether there are internal differences or whether different compounds are used, as seems to be the case with BMW approved tires. Finally, Tire Rack's consumer survey stats show no differences, but it looks like their consumer survey data is all lumped together. For the small difference in price, I'd stick with the N-rated versions.

I doubt anyone here could do a blind test and tell the difference on the street.
Even at the track I doubt it would be appreciable.
But it's a Porsche so only the finest virgin unicorn dust will due.

Yup, it's a Porsche 911. Buy it Porsche 911 tires unless you're going with snow tires.

If you can't afford the correct tires or even have to ponder it over 100-200 dollar difference, then in all reality you can't afford the car. That goes for anything unique.

Hogwash. There are major, not minor differences in N spec vs non. I have experienced traction issues (loss) when going from N spec Cup 2's to non N spec.

991.2 Michelin Pilot Sport 4S N0 305/20 have a wider tread width than the Ferrari K1 in 315/20 Cup 2... That's one example out of dozens of combinations. Tire weights in N spec vs K spec vs M spec and so on are all different. This effects rotating mass, contact patch, rotations per mile etc. I've even seen different tread patterns across different variations of the same tire.

Tires are oh so important yet so underrated and undermined. Ever wonder where Porsche picks up lap times and 0-60 times? Secret sauce is always in the tires. These are facts, not unicorn dust. The real question is, are you driving your car or posing?

I think it's less about the price and more about what's in stock right now.