BMW’s big 5-series sedan gets a 400hp-plus V8 in the M550i; the M550i comes in Base or Luxury Line trim levels, and is available with BMW’s proprietary xDrive AWD system. Your M550i xDrive would have left the factory with Michelin Primacy 3, Pirelli P Zero or Pirelli Cinturato P7 tires as OEM. The 550i is available with Base, Luxury Line, M Sport and Modern trim levels, with BMW’s xDrive AWD system as an option.
When it’s time to shop for 2018 BMW M550i xDrive tires, we’d suggest premium all-season tires like the Goodyear Eagle LS-2 ROF, Continental ProContact GX (with 55k mile treadwear warranty) and Pirelli Cinturato P7 All Season. For more spirited driving, check out summer and ultra-high-performance tires like the Michelin Primacy 3 and Pirelli Cinturato P7. Just remember that summer and UHP tires get their cornering, braking and steering grip from a softer, stickier tread formulation that’s pliable, but will stiffen and lose traction on colder days. Summer/UHP tires shouldn’t be used when temperatures are below 40-45 degrees F.