Forgeline wheels load capacity issue

Discussion in 'SRT Hellcat Wheels and Tires' started by Tire God, Apr 20, 2016.

  1. Tire God

    Tire God Hellcat Member

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    From the information I have gathered today, forgeline went out on a limb and decided to publish three different load capacities on each wheel depending on the tread wear rating of the tire being used. This is a good thing they have done and hopefully other wheel manufacturers will follow. There is a need for this. BUT, the issue we have found is that if you were to put them on a heavy Hellcat and run drag radials or any competition tire that has a treadwear rating of 0-100, the load capacity specified by Forgeline gets literally cut in half. The wheels originally are load rated for 2100 lbs "with street tires" as they state. The way to figure out what a wheels load capacity needs to be is to look on the driver door, find the highest gross axle weight rating or GAWR, and divide that number by how many tires are on that axle. Obviously it's 2. I already know the GAWR is 2,810 from a previous conversation on this forum. Divide that number by 2 and you get 1,405 lbs. The problem lies when you have that sticky tire on the forgeline wheels they claim the load capacity to drop to about 1100 lbs or so (300 lbs less per wheel than what's required). I will be contacting the tech specialist at forgeline to get further details and update this as I go. Safety is #1
     
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  2. Wayne

    Wayne Gold Member

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    I'm confused. Why does the wheel's load rating drop based on the tire used? Or, are you referring to the wheel and tire combination rating dropping?
     
    Last edited: Apr 20, 2016
  3. Tire God

    Tire God Hellcat Member

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    The extreme forces put on wheels when racing promotes faster wheel fatigue and eventually wheel failure. This has been a known fact in the racing community for forever. The major contributer to this is having a very sticky tire so you get traction rather than wheel spin and pushing the car to its limit and staying there over and over again. So apparently from their testing they came up with three different categories of wheel load capacities for each wheel depending on the type of tire being used. This is a very good and a very bad thing.
     
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  4. ciphros

    ciphros Gold Member

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    I would suspect that a tire that is stickier is also going to send more of the load to the rim, rather than losing grip. This could be another compounding reason for the different ratings.
     
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  5. Tire God

    Tire God Hellcat Member

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    I just said that haha. And yes. Newton's 3rd law of motion.
     
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  6. ciphros

    ciphros Gold Member

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    Great minds...;)
     
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  7. cole3986

    cole3986 Gold Member

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    Tire God,

    As stated in the previous thread, the OEM wheels load rating is 1,600 pounds so by installing drag radials on stock rims, there is a huge problem using this defective formula. If you think that this formula is accurate then all the wheels installed on Hellcats are unsafe. Lets use some common sense here, please
     
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  8. Tire God

    Tire God Hellcat Member

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    The formula is not defective. It's Forgelines load ratings that don't make sense. The formula is from (SAE J2530 Aftermarket Wheel Performance Requirements and Test Procedures). You can read about it in the link I'm providing or just Google seach that document from the SAE. I know the OEM wheels are rated at 1600 lbs. The whole point is that forgeline decided to publish these and they are not "guidelines" they absolutely have to be followed via the safety regulations set forth by the SAE TUV ect. And what is going to happen is some unlucky person will have an accident and forgeline will not be responsible because the load ratings are clearly published. Or the other way around, and Forgelines testing, or lack there of, for the different load capacities is a bunch of crap. Either way this is a can of worms they should not have opened.
     
  9. Tire God

    Tire God Hellcat Member

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  10. HellScoot

    HellScoot Silver Member Hellcat Car Club HCC Charter Member

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    Tire God here is the thing.. Forgeline may have posted a faulty load calculation somewhere. Anyone who reads this thread that is not using Forgeline wheels for drag racing should not care. Ideally what would be of value is stating a fact that the factory wheel with its load rating is safe to use with a drag radial and specify which one. So many are already running Nitto's and M/Ts DRs on factory rims and no posted issues of wheel failures yet. Some will want to run a slick and some a DR at the track. Want safe rim options with size specs like good combo for a 17" or 18" rim tire combo that will hook hard and not rub. That is what people want to read about and what success or failures people have had racing them. If Forgeline wants to play with Hellcat owners that race then they should offer something up.
     
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  11. cole3986

    cole3986 Gold Member

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    That formula does not address the specific tire being used regarding tread wear, the reduction based on tread wear of the tire is nonsense, please show me where SAE J2530 is dependent on the tread wear of the tire, I am all ears
     
  12. Tire God

    Tire God Hellcat Member

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    The moral of the story, race on whatever wheels you want. They all fatigue at some point. Very few will experience wheel failure unless they race everyday flexing the wheel to the max over and over. Even then you will probably not have an issue with the stock wheels or a Bravado Tribute or whatever. So rejoice!
     
  13. cole3986

    cole3986 Gold Member

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    LOL, please keep it real, do not say the sky is falling then walk away. Step up or shut up, with all due respect. :cool::cool:
     
  14. Tire God

    Tire God Hellcat Member

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    It doesnt. That's what I'm getting at. Forgeline created this monster. Remember from the other thread?
    1461164592606-1096372829.jpg
     
  15. cole3986

    cole3986 Gold Member

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    yes that is not SAE standard as you know, again keep it real, that is nonsense
     
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