Tanner991

Hey all,

Is there any issue running N0 PS4S in rears and non N spec PS4S in front? Not sure if they have different tread compound so thought I'd ask if anyone here knew about the Michelins.

Thanks!

DBH

According to the "Michelin man" at this years PCA Tech Tactics, Michelin works with a number of auto manufactures to develop tires unique to their cars. So, he said a non-N0 tire will not provide the optimal performance on your Porsche. Mixing was NOT recommended. However, he also said that all four non-N0 tires would be okay - just not provide the full performance of N0 tires.

TimboCarrera

The 911 on display at the ATL f terminal when the psp4 came to market had a mix as you have stated. I posted pics in a previous thread. I've heard these are cars that are used at the local pec. Also if you run this setup you will make marketing unhappy with you. I'm sure they don't like me now. Also any 911 owners that are attorneys will not answer your question. mostly

GONEIN10

What does the NO abbreviation stand for?

Rich_Jenkins

Some info here:

https://www.tirerack.com/tires/tiret...&affiliate=WC3

PCA1983

Biggest issue is Porsche dealers cannot CPO a Porsche like that, even if tires are virtually brand new.

JoeFromPA

When a company won't provide specific information on a specially marked product, you can assume the information they don't provide would not help them.

In my experience by the time a vehicle is 10 years old tire technology and versions have surpassed what was available at the time it was made. And typically people install the best new tires....that were not specially designed and approved for that vehicle....and tend to report superior outcomes.

So you just have to ask yourself: what do you think you are getting with the N0 approval and are you willing to pay for that.

arter

You will not notice the difference

ryandarr1979

N-spec tires are tuned specifically for Porsche and will by physically different than non N-spec. Look at two identical brand and size tires on tirerack and compare the dimensions and you’ll see they’re different.

Carlo_Carrera

Agreed, even the rubber compound is different. N-specs are usually quieter too.

CarreraJimmy

I was wondering this question myself and checked Tire Rack for my 2013 C2. There were three wheel options/sizes for my model, each with a different N0 spec tire - Goodyear F1 A2 for 19s, P Zeros for 20s (295 rear), M PS4S for 20s (305 rear), There was not a rating higher/more recent than N0 availble.

I assume if I want to keep my 19s and N0 tires my only option is to keep the Goodyear tires. Any thoughts on comparison between an N0 spec F1 A2 and the non-NO spec PS4S?

DOUGLAP1

My daughter had those Goodyear N0 spec F1 tires on her Cayman, and they were absolute garbage. In cool (not even cold) weather they were absolutely dangerous. We changed them to Bridgestone RE-71R's and grip was wonderful, even in cold weather. The RE-71R is well known as the highest grip Summer high performance street tire there is. So, there is no excuse for any mediocre Summer tire like the Goodyear F1 to behave so badly in cold weather.

We have now changed her tires to the MP4S tires and she is very happy with those in all weather conditions that we see in the southern US. The grip is a bit less than the RE-71R, but not bad at all.

I have the Pirelli N0 spec tires on my 991, and they are much better than the Goodyear F1's. They are not as good as the MP4S, but still miles better than the F1's.

As far as I can tell, it seems that the N0 spec tires all have a rubber ridge that sticks out from the sidewall to protect the wheels against curb rash. Personally, I had rather have top performance, and that is certainly not what the N0 tires are in my experience.

CarreraJimmy

Great info. Thanks. Now to just make these tires wear out quicker.

Rich_Jenkins

Hi Jimmy, other than “I’d like to keep N0 tires because my car is under warranty” I would opt for the non N0 Michelins?

I had a set of Goodyear Eagles on my 981S. They were ok, but regularly lost air at 2 psi a month. I swapped them out for Michelin PS4S and the ride was much improved; I also no longer had a shimmy at 55-60 mph. They also did not lose air.

My 17 C2 had Pirelli’s on it last June when I bought it. They also lost air monthly. In December I had my dealer source a set of N0 PS4S, and I’ve been very satisfied. No added air since Dec (I check weekly). I am no track guy, but subjectively they feel a bit more secure in the wet, which here in FL we have a fair bit of.

Historically over two Porsche’s and many other cars in 40 years I’ve never been disappointed by buying Michelin tires. Good luck!

CarreraJimmy

Thanks for the info. This and the other posts have crystallized my thinking as to move up to PS4S. Only question now is whether I stay with my 19s, or move up to slightly wider 20s.