Home » Marangoni makes treads for 49-inch OTR tires Retail Marangoni makes treads for 49-inch OTR tires January 9, 2008 No Comments Order Reprints Marangoni SpA is now producing tread rubber for 49-inch OTR tires at its facility in Rovereto, Italy."This is the result of many years of investment and research," say Marangoni officials. You must login or register in order to post a comment. Report Abusive Comment Thank you for helping us to improve our forums. Is this comment offensive? Please tell us why.