Im experiencing a persistent issue with my truck. Once the vehicle exceeds 75 mph, it begins to shake significantly. I have taken it to three different Jeep dealerships, but none have been able to identify or resolve the problem. I was advised that the tires might be the cause, so I replaced all four tires with new ones. However, the issue still persists. After researching online, Ive found that many other Jeep Wagoneer owners are reporting the same problem, which suggests this may be a common issue. Im seeking a thorough inspection and a more definitive diagnosis, as the situation not only affects performance but also raises safety concerns.