This is the Michelin Primacy 3 ZP, a BMW-approved summer touring runflat tyre.
- Size: 245/50R18.
- 100 load index: 800 kg per tyre under specified conditions.
- Y speed rating: up to 300 km/h.
- ZP: Zero Pressure, Michelin’s runflat technology.
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- (star): BMW original-equipment approval.
- GRNX: Michelin Green X, its energy-efficiency designation, not a separate EU label grade.
- Load version: Standard Load, not XL.
For Michelin product code 948389, the confirmed EU label is C-rated fuel efficiency, A-rated wet grip and 71 dB external rolling noise, class B.