All Bridgestone brand passenger and light truck tires — except RFT/Run-Flat, Potenza RE-11, winter and "temporary use" spare tires — sold in sets of 4 or more tires through an authorized retailer are covered by the Buy & Try 30 Day Guarantee. The DriveGuard, Potenza RE960AS RFT, and the Turanza EL400 RFT patterns are covered by the Buy & Try 30 Day Guarantee. If a retail customer is not completely satisfied with their eligible Bridgestone-brand tires, the tires can be returned to the location where they were originally purchased within 30 days of purchase for a full refund or exchange. Original proof of purchase is required. The Buy & Try 30 Day Guarantee applies only to full sets of tires (4 or more tires purchased together); return of less than a full set of tires will not be accepted. Bridgestone brand tires applied as original equipment on new vehicles are not covered by the Buy & Try 30 Day Guarantee. Additional exclusions apply, as identified in the section "What This Limited Warranty Does Not Cover."