Repost, twice now in pitstop.

 

I'll let it live here until the better breed has had a chance to see it.

 

I think someone sold him a wrong lug nuts.

 

Wow. That's an expensive mistake.

 

How in the world do you get all four tires to fall off at the same time. I don't think I could manage to do that even if I tried.

 

I was just about to post this.

Lesson learned.

Sorry it had to happen to such a cool car and a great guy.

The following was posted on another forum about this:

"Before you guys chastise the guy and rip him a new one make sure you know the whole story.

This guy had just bought those wheels and was given the wrong set of lugnuts. He did torque them and they seemed to torque just fine. However, there are a few things to learn from this:

-If you buy new lugs, make sure they fit properly by screwing them on without a wheel first to see if they go all the way to the rotor hat (or as far as they can) smoothly.

-Always make sure the lug and the lug seat on the wheel are the same style (conical, rounded, etc).

-Always make certain you have enough thread engagement if you use wheel spacers or wheels with the wrong offset for your car (at least 6-7 full turns of the lugnut).

-make sure your lugs are torqued properly.

-Use hubcentric rings so that the weight of the car is not carried by the lug studs alone."

 

Soooo... was it 1/2" nuts on a 12mm thread? Or not enough thread engagement, or what? Enquiring minds want to know.

I don't understand how the could "Torque up properly" but then not hold.

 

Yea. I don't get how all four tires came off at the same time either :screwy:

 

Hub centric rings, are for centering the wheel, they aren't designed to hold the weight, so it will not bounce around and feel like a bad balanceing job.
Mine are plastic, there are aluminun ones as well. I chose plastic cause they don't corrode to the hub.
here are a couple of sites:
http://www.miata.net/garage/hubcentric.html
http://www.discounttiredirect.com/direct/brochure/info/tmpInfoWheelFAQ.jsp
http://www.motegiracing.com/techzone/wheeltechdetail.asp?filename=wheeltech2
http://www.hogantire.com/tcwheelfitment.htm

 

Holy crap.

 

The clamping force of the two faces is what supports the weight of the vehicle... which is one reason why loose lugs are so dangerous. The studs then support the weight, as well as being subject to all sorts of nasty shear from the wheels moving around on them.

 

Soooo... was it 1/2" nuts on a 12mm thread? Or not enough thread engagement, or what? Enquiring minds want to know.

I don't understand how the could "Torque up properly" but then not hold.

I think if you cross-thread a nut of the wrong type and it binds, it can feel like they are torqued properly.

I am wondering if someone didn't play a prank on him...like Johnny Knoxville came to an auto-x.:lol:

 

I am wondering if someone didn't play a prank on him...like Johnny Knoxville came to an auto-x.:lol:

If that was the case, man would there be hell to pay.

 

I read that the lugs were only on by 2 or 3 threads and then everything snapped at once.

I'm just glad someone else learned that lesson for us.

 

I thought at Auto-X events tech checks for these kind of things?

 

I thought at Auto-X events tech checks for these kind of things?

Most tech inspectors wiggle the wheel a bit to check for bad wheel bearings. Even Conan the Barbarian couldn't wiggle a lug nut loose that had been tightened down three threads.

 

Got it I thought they looked to see how much the nut was on the stud too.

 

If this is a double post...sorry

http://www.teamjamoto.com/dixeregionpage.htm#v8301600

It has been removed.

Too late...it already made it to EBW0rld. That blows. We don't need any autocross accidents televised on teh web.

BTW, whoever posted it on EBW0rld thinks it was a drifiting competition:lol: :screwy: . Good.

 

^^"video error"

 

where i could see that video??

 

Do a YouTube search for drifting.

 

Ok...there's a **** load of videos under drifting...anyone know the actual link or a more defined keyword to search for?

 

This is only the first min and a half of the original video. The full video shows every one looking for the lugs and helping to get the car off the ground and back on its wheels. http://www.break.com/index/when-drifting-goes-bad.html

Tuwey

 

Am I mistaken or does he have the handbrake engaged? Not like it's going anywhere.

 

Got it I thought they looked to see how much the nut was on the stud too.

You're mixing up the NWR-SCCA Solo II annual tech procedures (which have many requirements that the normal ones don't) with the regular tech done at each event.