"Our long-term goal of full petroleum oil replacement in our products by 2040 remains in place," Goodyear added.
As it continues to increase use of soybean oil, Goodyear said it had identified a need to formalize its standards for the responsible procurement of soybean oil.
As a result, the tire maker published its "soybean oil procurement policy" in 2021, helping processors and farmers "to establish practices and make sound environmental and social decisions related to the growing, harvesting and processing of soybeans."
As part of its wider sustainability strategy, Goodyear set a goal in 2020 to create a tire made 100-percent from sustainable materials by 2030.
"Our scientists and engineers made great progress toward that goal by developing a 70-percent sustainable-material tire," the tire maker added.
The demonstration tire contained 13 featured ingredients, including three different carbon blacks produced from methane, carbon dioxide and plant-based oil; soybean oil; rice husk ash silica; and polyester recycled from plastic bottles and other plastic waste.
Another key environmental technology pursued by Goodyear has been the use of RHA silica as an alternative to conventional sand-based silica, which is highly energy-intensive product.