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I am just learning about our Tires and the Porsche Designation. I understand about the N0 and progressive numbering system N1, N2 until a Totally new tire comes out and then it's back to N0...

On my 2015 GTS, it currently has Pirelli P Zero
FR: 245/35 ZR20 (91Y) N0
Rear: 305/30 ZR20 (103Y) N0

However, on the Front tires there is a Wheel Protector, and on the 2 Rears, there is not.

Should there be Rim protector, you know that pyramid shoulder that sticks out so we dont scratch our wheels, on both front and back?

See U n RearView

Rears

awrryan

No rim protector on Porsche-approved rear tires for a 991.1

randr

The rim protectors are on both front and rear - P Zero N1, but not on the N0