sperkins

Tintin

Over torquing the nuts weakens the studs... my eyesight is not as good as it once was , but the car was handling ok and then oops...

A lack of mechanical understanding methinks

It is Autocross after all, you can't expect miracles...

ericstanley

Should have focused more on lug nuts and less on shoe color...

thehammer69

This was posted last year on many sites. The problem was that he used the wrong sized lug nuts. They were actually torqued on but the barely contacting threads let go and the wheels came off.

parkerracing

There was no video that I could see, but if this is the one where all the lugnuts fall off a Mazda at the same time in the second turn of an autocross, here's what happened. End of the day fun runs, wants to try a buddies set of tires, they trade wheels. The problem? They didn't trade lug nuts. Different seat angle. If the video runs long enough, you'll see the studs still IN THE LUGS. They didn't fall off, they broke. Thats 20 studs failing almost simultaniously. Lesson? Match your lug nuts to your wheels /:\

Diesel68

This actually happened in Valdosta, GA with the Dixie SCCA group. I watched it happen as I was doing timing and scoring. This was during competition and it was not fun runs. You must be thinking of another incident, Parkerracing. And the guy in the video is not the owner. It's a safety steward.

Thehammer69 is right. The driver used the wrong lug nuts. They were close enough in fit that it fooled the owner in thinking they would work. They torqued fine, but there was not enough thread contact to hold them. This was the owners first time using race tires, and the auto parts store sold him the wrong lug nuts.

The driver was a regular to Dixie and the Wiregrass SCCA group. This couldn't have happened to a nicer guy. Unfortunately he hasn't been back since the incident.