What does a Porsche N marking mean?

Porsche works with tyre manufacturers to approve tyre specifications for particular vehicles and applications. Porsche-approved tyres carry an identifying marking on the sidewall. The marking helps distinguish an approved specification from another tyre that may share the same commercial model name and size.

The exact construction, compound and other characteristics can differ between specifications, so matching the vehicle manufacturer’s recommended tyre is particularly important on high-performance cars.

Should Porsche tyres match across the vehicle?

For replacement tyres, use the specification recommended for the particular Porsche model and wheel fitment. Avoid assuming that two tyres are interchangeable simply because the size, speed rating and tread-pattern name look the same.

Where the vehicle uses different front and rear tyre sizes, the sizes may naturally differ, but the approved combination should still follow Porsche’s current recommendations. If an older approved specification has been discontinued, check the replacement recommendation rather than mixing specifications based on guesswork.

What should you check before ordering?

• The full tyre size on the sidewall.
• Load and speed rating.
• The Porsche approval marking shown on the existing tyre or specified for the vehicle.
• Whether front and rear sizes/specifications differ.
• The latest vehicle or tyre-manufacturer fitment guidance.

See our guide to reading tyre sizes if you need help identifying the markings.