5 Year / 2-Retread Manufacturer’s Limited Casing Guarantee Certain BFGoodrich® Commercial Truck tires used only in long-haul service according to the instructions contained in the Operator’s Manual, are covered by an additional Manufacturer’s Limited Casing Guarantee against defects in workmanship and materials for up to 2 retreads for 60 months from the date of purchase as defined above when retreaded by an authorized Michelin Retread Technologies (MRT) retailers.