The Toyo Observe GSI-6 is a studless performance winter tire. The Observe GSI-6 from Toyo delivers excellent traction, braking, and cornering in all winter conditions. The Toyo GSI6 winter tire is available in 16 inch, 17 inch, 18 inch and 19 inch sizes. Call BB Wheels today at 320-333-2155 or order online for your new GSI6 tires by Toyo! Free shipping and the some of the best pricing for sale online!