Pilot Sport Cup 2 @ 21.5 pounds

B8 S4
#21

Where are you seeing JWL test data for various wheels? Also, I’d assume wheels have a harder time in every day driving than at the track. The roads here in MI are unbelievably shitty, I believe there is no restriction on max weight (GVWR) but there is on max weight per axle (GAWR), so semi trailers have like 10 axles. But I digress…

Crazy that you’ve seen wheels literally shatter on the track. I’ve seen rotors shatter and cause crashes, but never the wheels themselves.

FWIW, I believe I did bend one of my forgestar cf5v’s at the track (realized on inspection 3 months later, so could have been pothole but I doubt it). This was on some pretty serious contact with a curb at waterford hills. Harsh enough that my instructor wanted me to pit to inspect that everything was OK. Those curbs are fricken intense.

http://image.superstreetonline.com/f/58815087+re0+cr1+ar0/subaru-wrx-ford-mustang-at-waterford-hills.jpg

#22

I’ve slammed the peelers into apex curbs where I was near certain I had gotten a flat if not cracked the wheel. Part of learning a new track is learning the curbs, and which ones you need to stay off of. The peelers are heavy but they are quite strong.

#23

Yup. OEM ones can take some pretty good abuse XD
Drob23 - you’re right. Street probably does more harm to wheels than track, as streets have potholes and such that you wouldn’t encounter on the circuit. However, the street is a much lower pace environment, and if something were to happen, your car will generally not go spiraling out of control :slight_smile:

All wheel manufacturers are required to subject their wheels to 3rd party testing. Which 3rd party depends on the market in which they intend to sell their wheels to. I’ve not come across a single wheel that doesn’t have a JWL rating–heck, even my Alzors have a JWL rating. Not saying ALL wheels have JWL, but I suspect most often they will. So take a look at that. It should be a factor when considering track wheels. FWIW my alzors are 30lb 18s, and as u guessed it, they are strong and have a JWL approved rating of 800kg. That exceeds factory spec (!!). Mind you, they are my winters but whatever :slight_smile:

Some forgestars are near 700kg, but most are under. So most of them are below factory spec. It’s expected though…they are relatively affordable and light for what you are paying for. Though, many ppl have used them with success on track. So I wouldn’t worry about them.

For certain, checking wheels for cracks and fractures should be a part of any pre and post track day inspection. It’s serious business. There are 3 occasions where I’ve seen wheels shatter–all 3 are from hitting curbs (though one was initiated by a spin). It was all messy stuff.

http://1.bp.blogspot.com/_NRSDCBt4i-U/Sd25_nQZTWI/AAAAAAAACps/uKnGmZd4Fzw/brokenrim.jpg

http://i537.photobucket.com/albums/ff335/k3n_0/Crackedwheel2.jpg

The dforce wheels I posted up above are 700kg rating.

#24

“The first HRE FlowForm model features timeless design inspired by the latest P40SC in ready-to-mount sizes for specific makes and models. The wheels are all engineered and tested to the same standards of HRE’s forged products and will carry TUV certification for sale in Europe and JWL/VIA certification for sale in Japan.”

#25

Yup, makes total sense. The question is what approved load rating did it pass (measured in KG)?
I think your Boxter had HRE’s if I remember right. Maybe you can check :slight_smile: It should say JWL###

#26

that pic of the shattered wheel above was a rota wheel. theres a lengthy discussion on another forum about that wheel. im not sure about theyre ratings but I know they have a terrible reputation for cracking and shattering. and all theyre designs are rip offs from other reputable companys. theyre cheap but after factoring in a crash from a shattered wheel theyre not so cheap.

#27

Rotas ate a industry joke. It’s almost a meme.