What 12 owners told NHTSA about the 2023 Mercedes-benz S-class Phev

The tire (Pirelli 255/35R21) on my 2023 Mercedes Benz 580V4 developed a bubble on its sidewall. This tire was just replaced February 16, 2024, and has under 8,000 miles on it. This is the fourth tire I have replaced due to bubbles on the sidewalls.

NHTSA ODI 11654826

On [XXX] I had a blowout on the passenger front side of my vehicle. The vehicle was towed to Sugarland MB and a new Pirelli 255/35 R21 purchased. The blowout happened after I hit a bump (not pothole) in the road on [XXX] at [XXX] . My 2023 MB 580V had 9701 miles on it and had just had it's first "A" service with no defects noted in any of the tires. On [XXX] I noticed a bulge on the front driver's side tire. I took it into Sewell MB and they notice additional defects on another tire. I had to purchase one front driver side 255/35 R21 and a rear passenger side 285/30R 21. After leaving the dealership I filed a complaint with the NHTSA file #11622692 and called Pirelli to report the failures and make a formal complaint. I also called MB customer service and opened case #[XXX]. A representative from Pirelli contacted me on 10/31/2024 @ 11:00am and basically stated the issue with multiple failures of these 21" tires across the US is a MB problem and not Pirelli's. As of this followup complaint I have not been contacted by any one else . INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11640331

I had 9985 miles on my 2023 Mercedes S580V when the front passenger tire experienced a blowout earlier this year. The tire failed right after I had my first A service which did not show an issue with tires. Today is 10/30/2024 and I have 13978 miles on my vehicle. The driver side front tire Pirelli 255/35-R21/98Y has a bubble on the side wall. I took it to my dealership and they discovered that the rear passenger side Pirelli 285/30-R21/100Y has a bubble as well. I am having both tires replaced today.

NHTSA ODI 11622692