This is the Michelin Pilot Sport 4 MO, the Mercedes-Benz-approved version.
- Size: 235/45ZR19.
- 99 load index: 775 kg per tyre under specified conditions.
- (Y) speed rating: above 300 km/h, subject to Michelin’s operating limits.
- XL: Extra Load construction.
- MO: Mercedes Original approval, not a runflat designation.
- Runflat: no. Acoustic technology is not listed for this variant.
For Michelin product code 166840, the confirmed EU label is C-rated fuel efficiency, A-rated wet grip and 71 dB external rolling noise, class B.