2015 Cadillac CTS Tires & Wheels Problems

I purchased a Cadillac CTS 3.6, Performance Model, in late 2015 with Pirelli 245/40 R18 Pzero Run Flats as OEM tires. I replaced those tires with the exact same Pzero tires in February, 2019, after 35,250 miles on the OEM tires. I never had a problem with the OEM tires, and expected a similar driving experience and performance from the replacement Pzeros. To my surprise, the experience from the new replacement tires was completely different from the originals. I complained to the dealer on numerous occasions about the way the replacement tires rode and performed. I had the dealer re-check the front end alignment. I complained to the dealer that the tires lost air pressure to the extent of two psi per week. I complained to the dealer that the tires, as opposed to the driver, steered the car. I was at the Cadillac dealership on December 31, 2021, for a typical oil change and asked the dealer to check the front end alignment. At the time, the car had 48,458 miles on the odometer, and to my surprise, the dealer advised that there was no point in rotating and balancing the tires, or checking the alignment, because the wear on the tires was to the point of being dangerous to drive. Thus with 12,923 miles on these replacement tires, they needed replacement. I immediately complained to he tire dealer about the premature wear of the Pzero tires, They examined the tires, and agreed that there was obviously a defect resulting in the premature wear, and would file a claim with Pirelli on my behalf. I’ve heard nothing from them to date. As evidenced by the above information, please consider this a claim on my behalf, for tire defects in the Pzero tires, causing dangerous driving conditions, and premature wear shortening the life of the tires. The remaining life of the Pzero tires, the mileage shortened by the defects, amounts to $xxx, prorated, and herewith being claimed. THIS IS AN EXCERPT FROM A LETTER TO PIRELLI N.A. FURTHER INFO CAN BE FURNISHED ON REQUEST.

SAFETY HAZARD: DEFECTIVE PIRELLI TIRES; PZERO NERO; WITHIN A TIMEFRAME OF ONLY 15K MILES 5 PZERRO NERO TIRES NEEDED REPLACING DUE TO TIRE PULLING AWAY FROM RIM, THEN BULGING AND FINAL SIDEWALL WOULD BLOW OUT. REGARDLESS, IF THE CAR IS IN MOTION OR STATIONARY THIS WILL OCCUR WITH EACH TIRE. FIRST 3 TIRES WERE COVERED UNDER THE EXTENDED WARRANTY THAT I PURCHASE WITH PIRELLI. TIRE 4 & 5 WAS REJECTED TO BE REPLACED BY PIRELLI UNTIL THE TIRES ACTUALLY BLOW OUT. TWO VERY LARGE BULGES IN THE FRONT & REAR DRIVERS SIDE TIRES. MY CAR WAS AT THE DEALERSHIP FOR SERVICE (CUE WAS REPLACED MALFUNCTIONED) AND I WAS NOTIFIED THAT PIRELLI REJECTED REPLACING THE TIRES EVEN THOUGH I PURCHASED THE WARRANTY. I REFUSED TO DRIVE THE CAR OUT OF THE DEALERSHIP WITH 2 TWO TIRES THAT HAVE A BULGE AT THE SIDEWALL READY TO BLOW OUT AT ANYTIME. THE DEALERSHIP PROVIDED ME A LOANER CAR WHILE I FILED A COMPLAINT WITH GM CONCERNING THESE DEFECTIVE TIRES THAT ARE ON THESE CADILLAC'S. GM'S CUSTOMER SERVICE TEAM IS MANAGED POORLY TO SAY THE LEAST. I GOT A CASE# 8-3230449470 AND I WAS TOLD THERE WILL BE RESOLUTION WITHIN 48 HRS, THAT WAS ON AUG 31, 2017. IT IS NOW SEPT 7, 2017 AND I HAVE NOT HEARD FROM THE TEAM AND IT IS NOT RESOLVED. MY CAR STILL REMAINS AT THE DEALERSHIP UNABLE TO DRIVE. SINCE I DID NOT RECEIVE ANY SERVICE FROM THE CUSTOMER SERVICE TEAM I RAISED THE ISSUE TO THE GM EXECUTIVE SERVICE TEAM. ANOTHER CASE# 8-3253040006. I ADVISE THE TEAM OF THE SAFETY HAZARD OF THESE TIRES. I WILL NOT ENDANGER ANY OF MY PASSENGERS OR ANYONE ON THE ROAD WITH THESE DEFECTIVE TIRES THAT WILL BLOW WITH LESS THAN 3K ON THEM. I HAVE RESEARCHED THESE TIRES AND CUSTOMER COMPLAINTS ALL OVER THE INTERNET. INNOCENT PEOPLE ARE DRIVING ON THESE TIRES ON THE EXPRESSWAY GOING 85 MPH NOT KNOWING THAT A TIRE OR TIRES WILL HAVE A SIDEWALL BLOW OUT. I HAVE TAKEN A STAND WITH GM BY NOT DRIVING MY CAR.PLEASE RESEAR