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Bridgestone 3G RFT's -- New generation run-flat tires addresses RFT complaints
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07-06-2009, 12:05 PM | #1 | |
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Bridgestone 3G RFT's -- New generation run-flat tires addresses RFT complaints
New generation Bridgestone run-flat tires addresses RFT complaints?
BMW owners worldwide have lamented the switch of the BMW lineup to run-flat tires from the factory (in lieu of providing a spare tire). Many have complained of the RFT's ride harshness, noisiness, high cost and difficulty of patching. Bridgestone, however, has come out with its latest generation RFTs, calling the 3rd generation run-flat tires the "3G RFT." The tire company recently utilized a fleet of BMWs in Italy to demonstrate the improvements made to the latest generation run-flat tires. Would these new RFTs diminish or completely eliminate the biggest complaints against run flat tires in general? Read Autoblog's report from the demonstration event to find out: Quote:
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07-06-2009, 12:26 PM | #3 |
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How much will it cost???
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07-06-2009, 12:30 PM | #5 |
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Not if they're gonna cost 500-600 USD each...
then i'll rather get some Michelin PS2s....
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07-06-2009, 12:43 PM | #6 |
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3rd Generation Bridgestone RFTs
They are apparently only 5% stiffer than conventional tyres (while the 2G runflats, which are fitted to most BMWs, are 15% stiffer).
I was wondering if this new development would lead people to stick with runflats rather than switching to conventional tyres? SB1 |
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07-06-2009, 12:44 PM | #7 |
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FTA:
"Lastly, the cost of RFT technology has come down a bit. While pricing has not been announced as of yet, Bridgestone expects the 3G RFT to carry a 20-percent price premium over the equivalent conventional tire, a small price to pay from a safety aspect." |
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07-06-2009, 12:47 PM | #8 |
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so inbetween... the current tires and RFTs.
RFT F 300ea RFT R 400ea regular F 180ea regular R 200ea estimated price... 3G F 245ea. 3G R 300ea. not bad I'll bite ppp
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07-06-2009, 12:48 PM | #9 |
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I'd give them another chance once I see some what kind of wear other owners are getting with them.
The cost per mile vs performance ratio on the runflats is the biggest reason I don't use them. The wear out much too quickly for a tire that costs so much yet performs like much cheaper traditional sport tire. |
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07-06-2009, 12:51 PM | #10 |
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the truth is written in here about RFT's and it's this:
you're supposed to pull over immediately and change or fix the tire rather than riding on it...they are really only designed to help you steer after a catastrophic loss of pressure at high speed. |
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07-06-2009, 12:54 PM | #11 | |
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Quote:
they are designed to allow you to drive a resonable distance to get the car tire fixed. They are designed to allow you to safely navigate a busy highway and find a safe garage/tire shop to fix immediately following the puncture. they arent designed to drive on for days or weeks . ppp
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07-06-2009, 12:57 PM | #12 |
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The only problem with this is that I have never heard of any shop fixing a punctured RFT - they always say you have to replace it. I thought I remembered reading that the shops didn't want the liability because they couldn't tell how far the car had been driven on a flat.
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07-06-2009, 12:58 PM | #13 |
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I have Pirelli winter rfts and they did everything that Bridgestone claims this 3rd gen tire does. The car lost the sharpness of impacts and the ride quality greatly improved. I always said that it was Bridgestone's rft tech that was flawed. Not the concept.
That being said. I have conventional PS2s on my car right now and they are far more comfortible than either tire. |
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07-06-2009, 12:58 PM | #14 | |
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"While Bridgestone states that all of its new 3G RFT tires are designed to operate safely with zero pressure for up to 80 kilometers (about 50 miles), the reality is that a run-flat tire is designed to get you safely off the road and out of harm's way to where the tire may be safely serviced or replaced. In truth, a virtual clock starts ticking the moment a RFT loses pressure (the frictional stress and heat literally "cook" the service life out of the rubber compounds). Consequently, high vehicle loads, high ambient temperatures, and high speeds accelerate the clock, while light loads and cold temperatures slow it (when we experience a loss of pressure with a run-flat, we immediately pull over safely in the hope that the tire may be properly repaired before it is destroyed by driving on the vehicle). Of course, run-flat tires should never be fitted to a vehicle without a tire pressure monitoring system (TPMS)." |
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07-06-2009, 01:04 PM | #15 |
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i dont know what price you used for the conventional tire price....but thats some funky math for a 20% price increase
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07-06-2009, 01:10 PM | #16 | |
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i think that's really a secondary benefit that you can employ at risk of destroying the tire permanently. |
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07-06-2009, 01:11 PM | #17 |
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07-06-2009, 01:33 PM | #18 |
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These sound interesting, but a true test for those of us with the mod bug will be how well do they stick? I really do like the implied safety that the RFT's provide, but when pushed my OEM (i guess 2g RFT's) turn over quicker than a hooker eager to eat the pillow...where as you get no traction from the rear!
Anyways, I hope they addressed the harse ride (the tires not the hooker) and the stickiness of the TIRE. I would love for someone to get these on a car and do some real world testing, some runs at the drag strip and some closed course runs. If the reviews would come in very favorably to non-RFT's then I would be happy to purchase these as replacement tires or at least consider them.
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07-06-2009, 02:21 PM | #19 |
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Run flat technology makes AT&T wireless seem like good service. Honestly companies should not do product testing on consumers specially with an inferior product with such high prices.
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07-06-2009, 02:52 PM | #20 |
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as much as i don't care for the RFTs....when driving home one xmas in my wifes 325, we hit a HUGE pothole. pressure sensor went off immediately. there was a 3" x 3' tear in the side wall... i was able to safely drive home 30 miles. i was pretty impressed, and happy her car had them.
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07-06-2009, 03:12 PM | #21 | |
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07-06-2009, 03:14 PM | #22 | |
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the enforced sidewall could no longer handle zero pressure again since its was holding all the loads just on the sidewall for a certain distance....so the RFTs might not up to task on the next puncture....and just fail and run on rims only....
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