P225/65R17 GEOLANDAR G91A 100H tire was loosing air with 12k miles. mazda service dealer claimed many punctures due to driving in NYC but car was sold in NYC. (3) nails located in very soft rubber and tire failed at 15k miles casing emergency situation. (3) others tire have no single issue. after getting new tire and after removing damaged tire following picture is in side the bad tire: many layers of rubber chipping off the tire. please investigate this tire and after searching internet for this tire I realized that something is going wrong with this tire type.