Car Talk: Locking wheel nuts can be a useful feature — if you have a key

Dear Car Talk:

I bought a used Volvo for my wife. I didn’t know it had locking lug nuts on it. The car did not come with a key to remove them.

None of the tire dealers in my small town had keys or could get the tires off. The Volvo dealership 70 miles away told me I would have to drive it to them, even though I had the VIN number. One of the tires was too worn out to drive that far, so I finally found a key to buy after A LOT of hunting online.

But here’s my question: Is there any way to remove a locking lug nut without the key? If the tire had gone flat on my wife while driving, she would have been in trouble, and I would have been in even worse trouble! — Bill

We’re going to reveal state secrets here, Bill. For those not familiar with locking wheel nuts, they’re for people who worry about their wheels getting stolen. You get four of them, and you replace one lug nut on each wheel with one of these “locking nuts.”

And what makes it “locking” is that a regular lug wrench won’t fit over it. You need the matching key or “mate,” which fits over your particular locking nut and attaches to a socket wrench.

We actually have a kit that’s designed to remove locking lug nuts for which owners have lost their key. But it doesn’t work on every car.

What does work on every car is this: We loosen up the other four wheel nuts on each wheel, by several turns. And then we drive the car around the parking lot. I’ll take left and right turns, and make some abrupt stops, trying to put stress on the wheels. And pretty much 100% of the time, when I pull back into the garage, those locking nuts have loosened up.

And at that point, we can point an air chisel at the edge of each locking nut, and spin it the rest of the way off. Then we give them back to the owner, who usually flings them into the trash, along with some choice words.

And then, next time we see the customer, they sheepishly tell us they found the key at the back of the glove box or buried next to the spare tire. So consider yourself freed, Bill. Power to the people.

Got a question about cars? Write to Car Talk write to Ray in care of King Features, 628 Virginia Drive, Orlando, FL 32803, or email by visiting the Car Talk website at www.cartalk.com.