The US National Highway and Traffic Safety Administration (NHTSA) is recommending Tesla expand an existing service bulletin that aims to fix older Tesla Model S and X vehicles suffering suspension failures. The suggestion comes from the agency’s Office of Defects Investigation (ODI), which just concluded its probe into the matter after finding 426 instances of the particular defect on Tesla vehicles.
As reported by Ars Technica, the defect is known in the larger Tesla community as the “whompy wheel,” which is caused by fore links failing on either the right or left sides of the front suspension — often when traveling at low speeds. The affected models include Model S (2015–2017) and Model X (2016–2017) vehicles.
The formal ODI probe was opened in 2020, and in its investigation, the agency narrowed the issue down to two part numbers that go bad. If the fore link breaks, the tire can end up rubbing against the Tesla’s wheel well, a problem ODI says hasn’t resulted in any loss of vehicle control.
