At Tyres.co.uk, Pirelli P Zero (PZ4) and Michelin Pilot Sport 5 are offered as tyre options for the Mercedes SL55 AMG in 255/40 ZR18 (99Y) XL for front and Pirelli P Zero and Michelin Pilot Super Sport 285/35 ZR18 (101Y) XL MO1 for rear which are 285/35 R18 97Y MO on standard R230 rims. Please double-check the registration and placard, keeping the staggered arrangement.
Information pertaining to the tyre size of the Mercedes SL55 AMG can be found on the tyre and loading placard on the B-pillar of the driver's side door which is visible when the door is opened. Mercedes-Benz also places a tyre pressure sticker inside the fuel filler flap at the right rear side of the vehicle. Remember to refer to both stickers and the sidewall of the tyre since the approved fitment can change based on the wheel options.
Being a rear-wheel drive vehicle, the Mercedes SL55 AMG does not necessitate the simultaneous replacement of all four tyres. Furthermore, no SL55 AMG drivetrain variant has a requirement for all four tyres to be of the same tread depth. Replace tyres in pairs on the same axle, and keep the matching requirements across each axle. If two new tyres are fitted, UK tyre-safety guidance stipulates that they must be positioned on the rear axle.