Michelin 275/35ZR21 (103Y) XL PILOT SPORT 4 [ACU] N0

This is the Michelin Pilot Sport 4 Acoustic N0. It’s a high-performance summer road tyre in a Porsche-approved specification.

• version, with sound-absorbing foam to reduce tyre cavity noise inside the cabin.
• N0: Porsche approval marking, not Tesla-specific.
• 103: load index of 875 kg per tyre under specified conditions.
• (Y): speed capability above 300 km/h, subject to Michelin’s limits.
• XL: Extra Load construction.

The exact specification, Michelin product code 084323, has EU ratings of fuel efficiency D, wet grip B and external rolling noise 71 dB, noise class B.