Runflat problems anyone??
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Originally Posted by Rudy' post='282302' date='May 14 2006, 08:59 PM
mixterk, was the shop's equipment capable of performing a "road force balance?"
Not sure what this is...can you clue me in so that i can enquire with them, and keep it in mind for the future...still need some summer wheels!!!
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My OEM Dunlop RF's have been noisy since about 7,000 miles and have severe cupping since 12,000.
The stealership has agreed to split the cost with me for replacement tires.
Choice of tire is mine. I'm leaning away from RF's this time.
The stealership has agreed to split the cost with me for replacement tires.
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My Ride: Current - 330 Sport Topaz Blue, Grey Leather, HK HIFI...lost interest!!
Waiting for - 535d Sport, Silver Grey, Foldy Mirrors, 172 19",Logic7,Pro Radio,Through load,Heated Front Seats,High Gloss shadowline,Black Maple,Headlight wash,Sun Protection Glass.
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Originally Posted by Hatchman50' post='282326' date='May 14 2006, 09:59 PM
My OEM Dunlop RF's have been noisy since about 7,000 miles and have severe cupping since 12,000.
The stealership has agreed to split the cost with me for replacement tires.
Choice of tire is mine. I'm leaning away from RF's this time.
The stealership has agreed to split the cost with me for replacement tires.
![Twoup](https://5series.net/forums/images/smilies/imported/twoup.gif)
Hoping for 2 new replacements FOC...I know that RF's have had a mixed reception depending on manufacturer, but these are the first ive come across from Goodyear (based on what I read on this forum) that are really bad.
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Originally Posted by mixterk' post='282312' date='May 14 2006, 04:31 PM
Not sure what this is...can you clue me in so that i can enquire with them, and keep it in mind for the future...still need some summer wheels!!!
In the old days, tires were balances with a bubble level system which was very primitive and only balanced a wheel/tire on a side-to-side axis. After a while, computerized "spin-balancing" became more popular. Spin-balancing actually spun the tire and measured not only side-to-side variations but also up-and-down variations. Now, there is road-force balancing which is a step beyond the traditional spin-balancing. Road-force balancing simulates a "load" on the tire/wheel just as if it's attached to a car and driving down the road. It is able to determine many more things about the wheel/tire pair. For example, if the wheel or tire isn't perfectly round (which is pretty common), it can determine at what position the wheel and tire should be mounted to minimize this condition. As far as I know, it's one of the most avanced ways to do a balance and it helps to eliminate some of the nagging vibration issues that people have.
Here's a link that provides much more detail than I'm able to give:
http://web.archive.org/web/20060430045534/...com/balance.htm
Here's a link to the Tire Rack's page explaining things as well:
http://www.tirerack.com/tires/tiretech/tec...e.jsp?techid=40
And finally, here's a link to a .pdf file about the Hunter GSP9700 machine:
4159T.pdf
It's interesting to note that both articles feature a Hunter machine -- the same machine that my BMW dealer has...
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If your dealer doesn't have the Hunter machine and you want to get your car balanced with Road Force technology, you can use Hunter's finder website to help you find the nearest shop that has the equipment:
http://www.gsp9700.com/pub/search/FindGSP9700.cfm
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Originally Posted by mixterk' post='282312' date='May 14 2006, 09:31 PM
Not sure what this is...can you clue me in so that i can enquire with them, and keep it in mind for the future...still need some summer wheels!!!
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Originally Posted by nbusbridge' post='280476' date='May 10 2006, 11:11 AM
After 64 miles my Goodyears are still fine
Sorry to hear of you problems. I'll have to keep an eye on these.
Let us know what the Goodyear man has to say.
All the best
Nick
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Sorry to hear of you problems. I'll have to keep an eye on these.
Let us know what the Goodyear man has to say.
All the best
Nick
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Anyway, back to the topic. Goodyear must replace them, no question. This is clearly a fault in the product and they are legally obligated to do so. They also have a manufacturers treadwear rating and have no lived up to it.
BMW supplied the tyres and should go in to bat for you on this with Goodyear, any decent dealer would do this.
By the way, Michelin tell me that ZP's for the e60 will be on the market soon. Thank goodness
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Michelin ZP. What's that?
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What Mixterk described does sound like a manufacturing defect rather than the other posts on the forum which seem to be about poor alignment and short lifespan.
Tyres just don't crack or lose chunks of tread.
This almost sounds like the sort of effect you see on REALLY OLD tyres that have sat on hardly used cars in the sun for years.
Deffo something wrong here.
Tyres just don't crack or lose chunks of tread.
This almost sounds like the sort of effect you see on REALLY OLD tyres that have sat on hardly used cars in the sun for years.
Deffo something wrong here.
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I have 3500 on my GY NCT 5 RF and they are holding well and they entertain when I have my radio-off. (what noise) ? I thought that was a newkind of newage music!
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