Run flat tire did not inflate when it got punctured at Hwy 70 E. Tried to drive with extreme vibration but was totally unsafe. Called BMW roadside assistance, gave them the location, road marker number. Waited 4 hours for assistance, no help arrived. Called a tow truck 4 hours later at 12.30 am at our own expense. We got different versions from the assistants at Bmw road side. One said the tow truck got lost, one said the company refused that its too far. We are extremely disappointed and feel threatened with this kind of car with no spare tire and run flat tire which are suppose to be able to drive 100 miles after the damage but were not. we want the tires replaced and possibly look into getting another car with a spare tire