A Firestone brand, winter, or “temporary use” spare tire will be replaced with an equivalent new tire for a pro- rated purchase price if the tire becomes unusable for any reason within the manufacturer’s control under the follow- ing conditions:
• There is no free replacement period.
• Coverage extends up to 5 years from the date of purchase—proof of purchase date required. Without proof of purchase date, then 6 years from the date of tire manufacture. During this period, the tire will be replaced for a pro-rated amount. To determine the replacement price, the percent of used treadwear is multiplied by DEALER’S then current selling price for the replace- ment tire(s). The appropriate taxes, mounting, balancing, disposal fees, and other service charges may be added to the replacement price.
• The tire must not be worn to 2/32 inch (1.6 mm) or less remaining original tread depth (i.e. worn down to the top of the built-in indicators in the tread grooves).
• Exclusions apply—as identified in the section "What This Limited Warranty Does Not Cover.”