It may take time to scientifically determine the cause of the problem.
Tires are highly complex engineered products.
In addition, there are many other forces that affect tire performance such as weather, temperature, vehicle loads, driving styles, vehicle dynamics, inflation pressure and road conditions. Begun air freighting replacement tires made at Bridgestone Corporation manufacturing plants in Japan. The first shipment of new replacement tires left earlier today on a Thai Airways flight from Japan and at least 10 more flights are planned before Monday. These shipments will continue nearly every day as long as needed to assist consumers involved with the recall. Asked other tire manufacturers to increase their supplies of replacement tires.