#lugnuts

Mazda has filed a recall for 25,003 of its 2019 Mazda3 cars due to a risk of the wheels falling off. Lug nuts were found to have loosened and come off the car, though there have been no reports of accidents or injuries thus far. Having personally had wheels depart my cars more than once, I can attest to this leading to a less-than-ideal day and hope to encourage affected customers not to wait on this one.

Wheel bolts, or studs, on the car are pressed in from the back of the wheel hub. When the lug nuts are tightened on the studs, they essentially sandwich the hub, rotor, and wheel together. Mazda found that the studs where not fully seated in the back of the hub as the vehicles left the factory, allowing them to be drawn in the remainder of the way as the forces on the wheel were naturally applied through driving. This, however, would also gradually reduce the torque on the lug nuts.

A group of Ford owners hoping to cash in on bad nuts did not get their day in court. Instead, their proposed class-action lawsuit was tossed out.

We told you about the 120-count complaint against Ford back in 2017, when the well-known firm Hagens Berman — a veteran of auto litigation — announced the lawsuit. Owners complained about swollen, delaminating lug nuts, stating that this led to out-of-pocket costs, safety concerns, and a reduction in their vehicle’s value. After looking at the case, the judge saw no reason to proceed.

Ford Motor Company finds itself on the receiving end of a lawsuit concerning the simplest part of any car or truck: the lug nuts.

In this case, nuts that swell and delaminate not long after purchase, rendering the vehicle’s lug wrench useless in the event of a flat tire, or when the owners decide to swap their seasonal rubber. The lawsuit, filed by Hagens Berman Thursday in the U.S. District Court for the Eastern District of Michigan, seeks class-action status. Hundreds of claimants have put their name to the suit.

Millions of Ford vehicles dating back to 2010, including the popular Fusion and F-150, feature two-piece lug nuts with a steel core and chrome, aluminum, or stainless cap for appearance purposes, the lawsuit claims. That outer cap can swell, potentially endangering owners’ lives and wallets.

Sajeev writes:

In our last installment of this particular ‘slap, a reader had a question about aftermarket wheels. The solution was rather simple, the wheels discussed were not hub-centric. But I also mentioned a horrible “death wobble” problem with my aftermarket reproduction SVT Cobra wheels on my Fox Cougar, solution TBD. It was a big problem until…