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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Wheels and Tires Forum Sponsored by The Tire Rack > Run-Flat repair



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      06-20-2005, 02:13 AM   #1
CC 330i
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Run-Flat repair

Hello,

I just noticed my tire had dropped to 30 psi (didn't trigger the sensor) and upon closer inspection, I noticed a nail in it. It is a very slow leak (3 psi over 2 days) so I am wondering if it is repairable. It is pretty close to the middle of the tread, and I want to make sure that if I have it repaired, that it will be safe.

Does anyone have the latest skinny from BMW/Bridgestone? I can't find much online, and there are conflicting posts on this and other forums.

Thank you!
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      06-20-2005, 04:10 AM   #2
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CC330i,

I am no tire or run-flat expert but from what I understand, the run-flat ability of your tire hasn't really been used yet. This ability stems from the special construction of the sidewalls in the tires. When there is still 30psi of pressure in the tire there is still, ummm, a lot of air in the tire. It should not be riding on its sidewalls at this point. It doesn't seem to that the sidewall should be damaged by this yet.

So if the puncture is something that's patchable then it seems that you could do that ASAP and be okay. Just my $.02
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      06-20-2005, 11:23 AM   #3
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I found this online:

http://www.sae.org/automag/features/...-113-4-184.pdf

First info directly from Bridgestone that I have seen that states a Bridgestone can be repaired if it has a slow leak!
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      06-20-2005, 12:47 PM   #4
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I had my tire repaired at a local tire shop. They said it was no problem to repair a run-flat as long as the damage was not to the sidewall, and that the tire has not been run on for a long way flat. They inspected it and it looked fine, so they went ahead and repaired it. I will let everyone know if I have problems with it later.
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