Forgestar Wheel Failure?

Roadracer350 · Apr 11, 2016

Anyone have any more info on this?

https://www.youtube.com/watch?v=vtYjujhW27Q

Boaisy · Apr 11, 2016

Saw pictures of this yesterday. Looks like the same F14 style Vorshlag used (not sure about the specs off the wheel itself). One of the Facebook Mechanic experts (so you know it is true) said that close up photos showed signs of possible stress cracks were formed before the event took place.

Mark Aubele · Apr 11, 2016

Holy shit. Watch the whole vid, all of the other wheels are cracked too. Reminds me of the old Konig Villan fiasco. Light car on street tires too.

Lucky_13 · Apr 11, 2016

Still flipping through the main thread on another forum, but this caught my eye in his initial post:

Lugnuts holes: Lugnut holes could be deeper. I can only get 5 rotations before the lugnuts are torqued. I would prefer 8+. Distance between the lugnut face (engaged in with the cone) is 12.3mm, while on my Enkei PF01SS, this distance is 9.2mm.

I calculated out the minimum ISO thread engagement--comes down to 6.5 turns. I'm getting 5. The ISO minimum engagement is the minimum engagement necessary for the bolt to fail before the threads. So likely, the threads will fail first with this few threads. That isn't to say it will fail in use however, but it isn't ideal.

Additionally, pretty heavy powdercoating in the lugnut holes--torque and remove the lugnuts a couple times, blowing out the lugnuts holes in between cycles. The coating will flake off the aluminum until it's all gone and you can get proper torque to the aluminum.

I'm going to use Gorilla "Extended Thread" lug nuts just for piece of mind, instead of going to longer studs or the like. The extended thread section doesn't have the hoop strength of the actual nut part, but there are ~5 more threads engaged. I'm OK with that. These guys: http://www.amazon.co...0?ie=UTF8&psc=1

I drilled the lugnut holes out slightly to allow the "nose" of the Gorilla Extended Thread nuts to fit inside.

To date, I haven't had any failures, so I guess this works!

dmfracer · Apr 11, 2016

That's scary. Good thing there was nothing to hit at that track. That would not be good at a place like Road Atlanta.

What are the preferred forged wheel options if one did not want to buy cast wheels?

Anyone else had this problem with Forgestars?

Mark Aubele · Apr 11, 2016

Lucky_13 said:
Still flipping through the main thread on another forum, but this caught my eye in his initial post:

It sure doesn't seem like the kid is too bright. Lots of "it might work but why the fuck would you consider it" there.

csamsh · Apr 11, 2016

It reeeeallly doesn't even look like a forgestar to me, either that or it's an OLD model.

Either way, any wheel can break. Gotta inspect Forgelines, Forgestars, and AMR's all the same.

TGR96 · Apr 11, 2016

Well, I give the guy one thing...he has A LOT better attitude about it than I would have had. I certainly would not have been laughing.

Now excuse me while I got inspect my Forgestars..

SoundGuyDave · Apr 11, 2016

Well, he can say that he LITERALLY "drove the wheel off that thing!"

DocB · Apr 11, 2016

What I don't get is, how is that "awesome" as he said in the video?
That wheel could have outright killed him or another driver.

Mach2burnout · Apr 11, 2016

Yeah but this guy was jumping curbs on every corner. That's for wheel to wheel racing, not track days. When your doing that it's just a matter of time before an aluminum wheel is going to fail. The message here is check your wheels thoroughly after each track day. Period. Inside and out.

Also the corner just before the wheel broke he jumped a curb in a high speed corner that he had no need to. He had plenty of track to carry the speed with out that 2' of extra real estate that he took. Point being, how many other times did that happen in 14 track events. I believe the wheel manuf. is getting called out when it could be driver/owner lack of proper maintenance. Jmo
And I'm not calling any body out for lack of maintenance at all. As the old saying goes "a bought lesson is the best kind"! And most of us learn the hard way.

Sent from iPhone

Roadracer350 · Apr 12, 2016

csamsh said:
It reeeeallly doesn't even look like a forgestar to me, either that or it's an OLD model.

Either way, any wheel can break. Gotta inspect Forgelines, Forgestars, and AMR's all the same.

I'm with you that hub does not look like a Forgeline :word:

Mach2burnout said:
Yeah but this guy was jumping curbs on every corner. That's for wheel to wheel racing, not track days. When your doing that it's just a matter of time before an aluminum wheel is going to fail. The message here is check your wheels thoroughly after each track day. Period. Inside and out.

Also the corner just before the wheel broke he jumped a curb in a high speed corner that he had no need to. He had plenty of track to carry the speed with out that 2' of extra real estate that he took. Point being, how many other times did that happen in 14 track events. I believe the wheel manuf. is getting called out when it could be driver/owner lack of proper maintenance. Jmo
And I'm not calling any body out for lack of maintenance at all. As the old saying goes "a bought lesson is the best kind"! And most of us learn the hard way.

Sent from iPhone

I know the Australian V8 Supercar guys jump curbs like mad but not only do they inspect their wheels they also replace them at regular intervals.

Sky Render · Apr 12, 2016

Roadracer350 said:
I know the Australian V8 Supercar guys jump curbs like mad but not only do they inspect their wheels they also replace them at regular intervals.

Those guys are crazy! I thought they used steel wheels, though. You know. Because crazy Aussie driving.

Sent from my Samsung Galaxy Note 4 using Tapatalk

Roadracer350 · Apr 12, 2016

Sky Render said:
Those guys are crazy! I thought they used steel wheels, though. You know. Because crazy Aussie driving.

Sent from my Samsung Galaxy Note 4 using Tapatalk

Everything I have read says they use BBS but it may be a special wheel for them. I do know they use some kind of cambered stick axle that uses a special floating axle that is like 7G!

stkjock · Apr 12, 2016

I have to believe that the BBS wheels used in ASC are a bit better built and costly than over the counter Forgestars

Boaisy · Apr 12, 2016

Looking at an article from 2013, the Holden SuperV8 was using 18"x11" wheels from Rimstock (British company). Forged Aluminum wheels. Might still be using them.

http://www.team-dynamics.com/

jayel579 · Apr 12, 2016

Mach2burnout said:
Yeah but this guy was jumping curbs on every corner. That's for wheel to wheel racing, not track days. When your doing that it's just a matter of time before an aluminum wheel is going to fail. The message here is check your wheels thoroughly after each track day. Period. Inside and out.

Roadracer350 said:
I know the Australian V8 Supercar guys jump curbs like mad but not only do they inspect their wheels they also replace them at regular intervals.

Exactly!!

Mach2burnout · Apr 12, 2016

Roadracer350 said:
I'm with you that hub does not look like a Forgeline

I know the Australian V8 Supercar guys jump curbs like mad but not only do they inspect their wheels they also replace them at regular intervals.

True and most forms of road course racing do as well. Even F1 cars jump curbs from time to time. But when your on a track day/street car budget you don't go jumping curbs just for video props. And then not do proper inspections before the next outing.

Sent from iPhone

2008 V6 · Apr 12, 2016

2800 to 2900 LBs car with driver – relatively light compared to our boats.
There is only one place you can really get hurt at Button Willow – Mostly good flat run off areas – Nice fun track. The curbs are not big and well ramped.
Anyone who tracks their car and doesn’t check all the suspension components regularly is just asking for a catastrophic failure – Only a matter of time.
Everyone should have a maintenance logbook for records as to what has been done, checked and when – Common sense.
The Enkie wheels, we used on our last car and are still using on the street, were X-rayed 3 different times to check for cracks because of unwanted sight seeing tours. I was able to get it done for free. I x-ray every cast or forged component on a dedicated track car – Mostly engine, gear, axle components and definitely wheels. It would scare the SHT out of most people if you have seen what is considered acceptable for quality control standards for production items.

travelers · Apr 12, 2016

Now that's a ride none of us want to take. He's lucky it just went straight,

Forgestar Wheel Failure?

forum member

Dark Knight

forum member

forum member

Junior Member

forum member

forum member

el blanco nino

This Space For Rent

forum member

05 Redfire GT

forum member

Stig's Retarded Cousin

forum member

---- Madmin ----

Dark Knight

forum member

05 Redfire GT

forum member

Senior Member

Similar threads

Support us!

Sponsor Links