RTR1

I have a 2020 C43 with 19” wheels and summer tires. I will be buying 18” wheels for the winter with dedicated snow tires. The stock tire size For the 18s is 225/45/18 Front and 245/40/18 for the rears. It’s difficult to find run flats for the rear. Would the 225/45/18 all around work? All suggestions are welcome.

toosteeley

225/45/18 all around would be fine. MB recommends a square setup for winter. I’d personally avoid run flats.

RTR1

Thank you. This is my first car with run flats. What is the recommended “fix a flat” type product that people keep in their car.

stockbmw

E63 comes with slime inflator kit in the trunk from factory.