A bad wheel bearing can cause your tire to tilt inward. The motion of the tire tilt thing in word, while you are driving, can cause the axle to break and the tire to come off.
Check tha idle speed control solonoid.
My 1987 corolla fx took 11.4 to fill on a pretty empty tank.
TAkeit to the Auto Zone store and they will check it free.
This problem is due to a weak igniter circuit within the distributor and was solved by replacing the distributor.