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08-03-2008, 02:38 PM | #16 | |
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Re: Can anyone identify these wheels?
I believe that 690kg is the structural weight of the wheel... i.e. what it can handle for vehicle weight on that corner. All wheels sold in the US are weight rated, it's a US-DOT requirement.
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08-03-2008, 07:14 PM | #17 | ||
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Re: Can anyone identify these wheels?
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BUT Not all tires are marked with this dot - plus not all the dots on tires are uniformity marks. Not to mention that there are a few OEM rims that aren't marked that way (some aren't even measured!) and pretty much all aftermarket rims aren't measured this way either. And last but not least: Uniformity is not related to balance. Put another way: You can match mount the tires and get a "zero" uniformity, but it will still require balance weights. Doing it the way you've suggested merely minimizes the amount of balance weight required, but doesn't do anything for the "out of round". |
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08-03-2008, 07:45 PM | #18 | |
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Re: Can anyone identify these wheels?
as opposed to just tossing the tire on there and adding whatever weights the machine calls for...
yes, I'll do what you suggest, cause it's not like I've done this since I was 14 or anything. I'm well aware of what those dots represent.. I've been to several conferences and "sermons" if you will, talking about the best ways to work with tires and the phenomena associated with vacuum and injection molding. We all know that no object is truly round, and I also know that if there is an out-of-round condition between your wheel and tire, there is no way to fix it that is realistically available, other than continuously rotating the tire around the rim to try to match it up. You can add all the weights in the world to your tire/wheel assembly, but the fact is, when you balance a wheel/tire, you're not balancing the wheel at all... you're balancing the tire. Adding to this: according to federal DOT specs, ALL (yes, ALL) rims must be measured for conformity to standards... this includes "out of round" specs. if it's not within a given specification, it's not road worthy, and can't be sold. Same thing for tires. What you're missing is that you're initially using those markings on the tire to balance it. The uniform high spot in the tire is always opposite the place that needs weight in the tire, as it's also the place that weighs the most. (more material/density of material in a given area.) What you're doing when you zero balance a tire on a wheel assembly is matching the weight differential AND the sizing/uniformity differential between the two. Resultant fact is that you end up with a tire that's completely balanced, needs no weights, and is as close to "round" as the assembly will allow. Zero balancing, I might add, is also the most commonly used method in high-speed applications... when's the last time you ever saw wheels weights on a professional race car? (Think: Formula 1, NASCAR, NHRA/IHRA, KART, etc.) They ALL use this method, and it works for them. Any Sears in this country has the capability to do it, but they don't train their personnel, as it would cost more. Like I said, it's not the easiest, or cost effective method, but it's what I do. If you wanted to balance the wheel, you'd have to spin it w/o the tire on it, on a machine that would accept that small of a load ( most tire balancing machines won't) such as a pulley balancer, and add/remove weight as necessary. |
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08-04-2008, 07:09 AM | #19 | ||||||||||
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Re: Can anyone identify these wheels?
There are a number of misconceptions we need to address, so I'm going to break up this posting into segments, so I can address each issue separately:
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Tires are not injection molded, nor vacuum molded. They are molded by applying pressure using a bladder inside the tire and pressing the tire into a mold cavity. The tire is removed by releasing the pressure in the bladder, and the tire is removed from from the bladder assembly. Sometimes the mold itself expands (called segmented molds) and the tire is more easily removed. Quote:
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http://www.tirerack.com/tires/tirete....jsp?techid=17 Quote:
Sorry, but look at this photo and see if you don't see convention balance weights: http://image.motortrend.com/f/featur...scar_tires.jpg Quote:
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Here's the web site for the Hunter GSP9700. Click on the "Introduction" tab. They give a pretty good description of the difference between balance and run out. http://www.gsp9700.com/index.cfm Hope this helps. |
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08-04-2008, 04:19 PM | #20 | |
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Re: Can anyone identify these wheels?
back on topic, fellas
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08-04-2008, 09:10 PM | #21 | |
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Re: Can anyone identify these wheels?
werd.. not going to sit and argue with you.. I know what I was trained by Representatives from 7 tire companies over 3 years... I know what I have certification paperwork for... but if you insist on being right, I suppose you can be this time.
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08-04-2008, 09:23 PM | #22 | |
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Re: Can anyone identify these wheels?
i saw another car with these wheels the other day at hardee's, still no luck searching for brand
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08-05-2008, 02:13 PM | #23 | |
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Re: Can anyone identify these wheels?
Should have left a note on his car or something.
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08-05-2008, 05:43 PM | #24 | |
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Re: Can anyone identify these wheels?
i thought about that, but I didn't do it
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08-05-2008, 05:56 PM | #25 | |
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Re: Can anyone identify these wheels?
Check all the local tire shops that sell wheels... they almost look like something PepBoys might have... Proline alloy.. Check around, you might get lucky and find someone that remembers selling those type of wheels.
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08-05-2008, 06:58 PM | #26 | ||
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Re: Can anyone identify these wheels?
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With all due respect to both you and Dan89: If you would like to debate this further, start another post. That way we can sort out what you have wrong and what you have right. I'm not interested in being right, per se, but I am interested in correcting some of the misconceptions you seem to have. BTW, I work for a major tire manufacturer and I train the trainers on this and other subjects. |
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11-16-2008, 05:19 AM | #27 | |
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Re: Can anyone identify these wheels?
Cant help you with who makes the wheels but the references I found below along with some others that might help
JWL Certification - Japan Light Alloy Wheel (JWL) standard is a certification level instituted by the Minister of Land, Infrastructure and Transport which requires that alloy wheels being purchased in Japan, must have the JWL mark on them thus showing the alloy wheels to have passed through a rigorous self-certification process. VIA Certification - Vehicle Inspection Association (VIA) is a third-party group in Japan which can test and verify whether or not any alloy wheels can meet up to the JWL certification tests. Found on link here http://kulchawheels.com/alloy_wheel_...n/standard.php |
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12-02-2008, 09:09 PM | #28 | |
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Re: Can anyone identify these wheels?
It's a very cheap no-name wheel that was commonly sold at places like Pep Boys.
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12-05-2008, 10:26 PM | #29 | |
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Re: Can anyone identify these wheels?
ya im pretty sure i have seen that at pep boys man
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