BMW Run Flat Tires Previous 2 / 4 Next Inside View After Running Flat The lack of broken and cracked sidewall rubber is due to the run-flat's rugged design. They can run 50 miles at 50 MPH with zero pressure. A conventional tire would have shown chunks of rubber missing inside. Previous 2 / 4 Next A gallery of our test of Run-Flat tires on a BMW X3 Your name * E-mail * The content of this field is kept private and will not be shown publicly. Subject Comment *