Dont worry about man..i have a set of michelins ps2 NO tire ....but they didnt fit on my m5....if they fit on yours go ahead they are awesome tiresAs I understand it the Porsche 'N' fitment simply refers to the fact that Porsche have tested the tyres on their cars, not that the tyres are specifically made for them.
If the load rating is correct is there any reason why we can't or shouldn't fit the Porsche fitment Pilot sports as these are now the only ones available in the correct sizes?
I can report that PS/2's solved SO MANY problems on my car - I was quite shocked at the difference, the car no longer follows it's own route on un-even surfaces.It does not impact the handling of the car. I completely broke away from the PS2's. I am running a set of BFGoodrich KDW2's. They are for lack of words amazing tires. Before on the PS2's I would get a lot of traction loss on take off and some slipage in the bends. With my kdw's I can push them as hard and fast as I want and have better handling on corners and a lot more grip on launch. Not to mention wet weather handling.....however in snow and ice they are by far the worst tire i have ever seen. I cant wait for summer.
Michelin's new Super-sports tire is due for release next month. It costs the same as the PS2 but is significantly better in dry & wet conditions. It's also quieter & lasts almost twice as long by all accounts!I can report that PS/2's solved SO MANY problems on my car - I was quite shocked at the difference, the car no longer follows it's own route on un-even surfaces.
I don't know what to believe regarding the N fitment / marker; some tyre places (including Michelin UK and costco) said "you don't want those on your M5 sir", others have said they are fine and just a rating - nothing different.
my vote for worst snow / ice tyre ever was the Toyo TR1's that I had on before the PS/2's.... standing start on snowy M25 last year = wheel spin in 5th with no throttle applied (ie just tick over). never again.
this was the thread I started last year about this .... http://www.m5board.com/vbulletin/e34-m5-discussion/147001-ps-2-discontinued.html
(last posting on the first [page is relevant)