1. Bridgestone Corporation
2. Hankook Tire Co. Ltd.
3. Pirelli & C. S.p.A.
4. Goodyear Tire & Rubber Company
5. Michelin Group
6. Continental AG
7. Yokohama Rubber Company Limited
8. Kumho Tire Co. Inc
9. Zhongce Rubber Group Co. Ltd
10. MRF Limited