YOKOHAMA AVID S34P TIRES Complaints

225 40 r18 all four of my tires have a crack thats on the side wall that goes around the whole tire took it to my dealership and they said that it was defective and that i couldn't drive my vehicle like that

The original equipment (OE) tires (Size: 225/40R18) on a 2023 vehicle exhibited severe, deep concentric cracking on the outer sidewalls and near the bead/rim line of all four tires at approximately 30,000 miles. The safety of the driver and passengers was put at extreme risk as the structural integrity of the tires was compromised, posing an imminent threat of catastrophic high-speed blowouts on the expressway. The failure was confirmed and reproduced by two separate professional facilities: the original vehicle dealership and an authorized tire manufacturer dealer. Both independent inspections concluded the vehicle was unsafe to drive and required immediate replacement of all four tires. The manufacturer's engineering review also inspected photographic evidence and acknowledged a material defect related to a "soft compound" breakdown. There were no warning lamps or symptoms prior to discovery; the defect was only found by a technician during a separate flat tire repair. Despite the manufacturer formally authorizing a 75% "goodwill" credit (Authorization #35936) after acknowledging the defect, they failed to complete the agreement due to internal communication breakdowns with their authorized dealers. This resulted in months of delay, forcing the consumer to pay the full replacement cost out-of-pocket to mitigate the documented safety hazard. The defective tires are available for inspection upon request.

Front driver side tire sidewall bubbled at 7900 miles on a 2024 Subaru Impreza on June 22nd. They are the original equipment tires: Yokohama Advan S34P P225/40R18 88V. A sidewall bubble is a sign of a structural failure and indicates the tire will eventually blow out. This can lead to loss of control as well as sending debris towards other road users. No warnings or tire pressure changes occurred. There was no impact, only normal highway driving prior to the damage. The damage was not present prior to 300 mile road trip, but was present upon arrival at our destination. The problem was immediately reported to Capitaland Subaru who the vehicle is leased from. Initially they refused to let me bring it in. Eventually they did get me an appointment for June 30th, and they allegedly inspected the tire at that time. They told me to keep driving on it until the warranty replacement was approved. A warranty case was never opened by the dealer. 17 days later, I received a call from the dealer saying I must open the case with Yokohama myself. The vehicle comes with a sealed kit of owner's documents and booklets including tire warranty information, but it contains Goodyear and Bridgestone warranty info and not Yokohama, which is the OEM tire on Subaru Imprezas. I had no info on my warranty nor a guide on how to submit such a claim. After searching online, I did so and gave the case number to the dealer, but I have not gotten any notification since. It has been well over a month and I've logged over 1300 miles on the damaged tire. The car now has significant vibration coming through the steering wheel as of 7/30/25. Dealer was supposed to provide a loaner but did not. The manager has made no attempt to address the issue. A complaint has been filed with Subaru corporate as well.