question bout different Michelin PS2 tire specs?
08-16-2010, 11:44 PM
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question bout different Michelin PS2 tire specs?
i have a couple of sets of PS2 tires from Tire Rack.
I got the cheapest PS2's they had which were closeout price.
They are for my tarmac rally wheels. (D.O.T race tires are no longer legal in the event hence these street tires as my choice)
the rear tires look a little different from the fronts? But they are all PS2's.
the 265/35/18 XL 97Y are not N3 version
the 315/30/18 N2 98Y are not N4 version
Anybody know the differences of the "N" specs? XL spec?? Why do the sizes i have differ in style from each other?
just curious....
I got the cheapest PS2's they had which were closeout price.
They are for my tarmac rally wheels. (D.O.T race tires are no longer legal in the event hence these street tires as my choice)
the rear tires look a little different from the fronts? But they are all PS2's.
the 265/35/18 XL 97Y are not N3 version
the 315/30/18 N2 98Y are not N4 version
Anybody know the differences of the "N" specs? XL spec?? Why do the sizes i have differ in style from each other?
just curious....
Last edited by tcsracing1; 08-17-2010 at 12:39 AM.
08-17-2010, 01:20 AM
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The N specification code's numbering changes when the tyre is re-tested by Porsche for use on a different car.
With this change sometimes come significant changes in the tyres compound thread depth and weight/reinforcement.
General rule is that you can’t mix and match different N codes unless there is an exception stated in a TSB.
For your car these are the current TSB's
John
PS if you want my opinion don’t pay attention to the designation. A good tyre can be used as long as it surpasses the load index and speed index safely.
With this change sometimes come significant changes in the tyres compound thread depth and weight/reinforcement.
General rule is that you can’t mix and match different N codes unless there is an exception stated in a TSB.
For your car these are the current TSB's
John
PS if you want my opinion don’t pay attention to the designation. A good tyre can be used as long as it surpasses the load index and speed index safely.
