AKRON-After a round of spring price increases, three tread rubber manufacturers are hiking prices again, blaming escalating costs of raw materials, particularly synthetic and natural rubber. Bandag Inc. boosted prices 3.7 percent on tread rubber and 6 percent on cushion gum on Oct. 1.
Oliver Rubber Co. announced it will raise its precure tread rubber prices 3.7 percent and its bonding gum and repair materials prices 6.2 percent on Nov. 7.
Effective Nov. 1, Hercules Tire & Rubber Co. said it will hike prices 3.5 percent on precure tread rubber, 5 percent on mold cure and 7 percent on repair materials.
In August, Goodyear, for the first time since March 1993, raised prices for precure tread rubber and retread supplies 3 to 4 percent.
Teknor Apex Co. also hiked prices in August.
Last spring, Oliver, Bandag, Hercules and Robbins Inc. announced price hikes averaging 3 percent for the first time in two years.
Higher costs for raw materials also have been blamed for price increases averaging 3 percent in the new-tire market this fall.
Robbins Inc. officials said they have not decided whether to increase prices this fall. Associated Rubber and Mohawk Tread Rubber could not be reached for comment.